Research activity information

• Left atrial single-cell transcriptomics reveals amphiregulin as a surrogate marker for atrial fibrillation.

  Yuya Suzuki, Takuo Emoto, Shunsuke Sato, Takeshi Yoshida, Mitsuhiko Shoda, Hiromi Endoh, Manabu Nagao, Tomoyo Hamana, Taishi Inoue, Tomohiro Hayashi, Eriko Nitta, Hiroki Konishi, Kunihiko Kiuchi, Mitsuru Takami, Kimitake Imamura, Masayuki Taniguchi, Masatoshi Inoue, Toshihiro Nakamura, Yusuke Sonoda, Hiroyuki Takahara, Kazutaka Nakasone, Kyoko Yamamoto, Kenichi Tani, Hidehiro Iwai, Yusuke Nakanishi, Shogo Yonehara, Atsushi Murakami, Ryuji Toh, Takenao Ohkawa, Tomoyuki Furuyashiki, Ryo Nitta, Tomoya Yamashita, Ken-Ichi Hirata, Koji Fukuzawa

  Atrial fibrillation (AF) is strongly associated with strokes, heart failure, and increased mortality. This study aims to identify the monocyte-macrophage heterogeneity and interactions of these cells with non-immune cells, and to identify functional biomarkers in patients with AF. Therefore, we assess the single cell landscape of left atria (LA), using a combination of single cell and nucleus RNA-seq. Myeloid cells in LA tissue are categorized into five macrophage clusters, three monocyte clusters, and others. Cell-Chat analysis revealed that monocytes and IL1B+ macrophages send epidermal growth factor (EGF) signals to fibroblasts. Amphiregulin (AREG) is the most upregulated gene in monocytes and IL1B+ macrophages in the AF group, compared with healthy controls from other groups. Serum AREG levels are higher in patients with persistent AF. These data suggested that EGF signaling pathway could be a therapeutic target for AF and serum AREG levels provide an effective biomarker for predicting persistent AF.

  Dec. 2024, Communications biology, 7(1) (1), 1601 - 1601, English, International magazine

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Enhancing origin prediction: deep learning model for diagnosing premature ventricular contractions with dual-rhythm analysis focused on cardiac rotation.

  Kazutaka Nakasone, Makoto Nishimori, Masakazu Shinohara, Mitsuru Takami, Kimitake Imamura, Taku Nishida, Akira Shimane, Yasushi Oginosawa, Yuki Nakamura, Yasuteru Yamauchi, Ryudo Fujiwara, Hiroyuki Asada, Akihiro Yoshida, Kaoru Takami, Tomomi Akita, Takayuki Nagai, Philipp Sommer, Mustapha El Hamriti, Hiroshi Imada, Luigi Pannone, Andrea Sarkozy, Gian Battista Chierchia, Carlo de Asmundis, Kunihiko Kiuchi, Ken-Ichi Hirata, Koji Fukuzawa

  AIMS: Several algorithms can differentiate inferior axis premature ventricular contractions (PVCs) originating from the right side and left side on 12-lead electrocardiograms (ECGs). However, it is unclear whether distinguishing the origin should rely solely on PVC or incorporate sinus rhythm (SR). We compared the dual-rhythm model (incorporating both SR and PVC) to the PVC model (using PVC alone) and quantified the contribution of each ECG lead in predicting the PVC origin for each cardiac rotation. METHODS AND RESULTS: This multicentre study enrolled 593 patients from 11 centres-493 from Japan and Germany, and 100 from Belgium, which were used as the external validation data set. Using a hybrid approach combining a Resnet50-based convolutional neural network and a transformer model, we developed two variants-the PVC and dual-rhythm models-to predict PVC origin. In the external validation data set, the dual-rhythm model outperformed the PVC model in accuracy (0.84 vs. 0.74, respectively; P < 0.01), precision (0.73 vs. 0.55, respectively; P < 0.01), specificity (0.87 vs. 0.68, respectively; P < 0.01), area under the receiver operating characteristic curve (0.91 vs. 0.86, respectively; P = 0.03), and F1-score (0.77 vs. 0.68, respectively; P = 0.03). The contributions to PVC origin prediction were 77.3% for PVC and 22.7% for the SR. However, in patients with counterclockwise rotation, SR had a greater contribution in predicting the origin of right-sided PVC. CONCLUSION: Our deep learning-based model, incorporating both PVC and SR morphologies, resulted in a higher prediction accuracy for PVC origin, considering SR is particularly important for predicting right-sided origin in patients with counterclockwise rotation.

  Oct. 2024, Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology, 26(10) (10), English, International magazine

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• 専任デバイスナースによる支援を受けた心臓電気デバイス(CIED)新規植込み患者の心理社会的適応の変化

  斎藤 紗欧里, 大岸 文美, 齊藤 奈緒, 高見 充, 谷岡 怜, 宮脇 郁子, 平田 健一, 福沢 公二

  (一社)日本循環器学会, Mar. 2024, 日本循環器学会学術集会抄録集, 88回, CP27 - 3, Japanese


• 植込み型心臓電気デバイス(CIED)植込み患者の植込み6ヵ月後の活動・睡眠の実態と関連要因

  松本 有実子, 大岸 文美, 福沢 公二, 齊藤 奈緒, 木内 邦彦, 高見 充, 谷岡 怜, 林 女久美, 宮脇 郁子, 平田 健一

  (一社)日本循環器学会, Mar. 2023, 日本循環器学会学術集会抄録集, 87回, CP20 - 5, Japanese


• 植込み型心臓電気デバイス(CIED)植込み患者の植込み6ヵ月後の活動・睡眠の実態と関連要因

  松本 有実子, 大岸 文美, 福沢 公二, 齊藤 奈緒, 木内 邦彦, 高見 充, 谷岡 怜, 林 女久美, 宮脇 郁子, 平田 健一

  (一社)日本循環器学会, Mar. 2023, 日本循環器学会学術集会抄録集, 87回, CP20 - 5, Japanese


• Case report of a ventricular fibrillation storm with a cardiac conduction disorder and HCN4 variant 18 years after ablation of atrial flutter.

  Toshihiro Nakamura, Koji Fukuzawa, Takeshi Aiba, Seiko Ohno

  BACKGROUND: Genetic abnormalities causing various arrhythmias including atrial arrhythmias, specialized cardiac conduction disorders, and malignant ventricular arrhythmias have been reported. However, it is sometimes difficult to diagnose and treat patients with various arrhythmias. CASE SUMMARY: A 49-year-old woman who underwent ablation of typical atrial flutter (AFL) at 31 years of age visited the emergency room due to a cardiopulmonary arrest. Her 12-lead electrocardiogram during sinus rhythm after resuscitation exhibited first-degree atrioventricular block with right bundle branch block and right axis deviation. No structural heart disease was evident on standard imaging screening. An implantation of a single-chamber implantable cardioverter defibrillator (ICD) was indicated. After the ICD implantation, she then experienced multiple ventricular fibrillation (VF) episodes. Radiofrequency catheter ablation of triggered ventricular premature contractions (VPCs) was performed but failed because the clinical VPCs could not be induced during the session. Although no pathogenic variants associated with Brugada syndrome or long-QT syndrome were found, a rare HCN4 variant, c.1209+2_1209+3insGAGT (rs786205418), was identified in a gene panel analysis. Because high-frequency clinical pacing was effective for suppressing the VF, the single-chamber ICD was upgraded to a dual-chamber ICD. Thereafter, high-rate pacing successfully prevented any further ventricular arrhythmias during the follow up. DISCUSSION: A clinical course with prominent wide QRS complexes and AFL in one's early 30s followed by sudden onset of a VF storm about 20 years later is extremely rare. Her clinical phenotype expression was possibly associated with a rare HCN4 variant; however, further study is needed to confirm whether this variant was pathological or not.

  Nov. 2022, European heart journal. Case reports, 6(11) (11), ytac431, English, International magazine

  Link to Kobe Univ. Repository (Kernel)


• Development of a Visualization Deep Learning Model for Classifying Origins of Ventricular Arrhythmias.

  Kazutaka Nakasone, Makoto Nishimori, Kunihiko Kiuchi, Masakazu Shinohara, Koji Fukuzawa, Mitsuru Takami, Mustapha El Hamriti, Philipp Sommer, Jun Sakai, Toshihiro Nakamura, Atsusuke Yatomi, Yusuke Sonoda, Hiroyuki Takahara, Kyoko Yamamoto, Yuya Suzuki, Kenichi Tani, Hidehiro Iwai, Yusuke Nakanishi, Ken-Ichi Hirata

  BACKGROUND: Several algorithms have been proposed for differentiating the right and left outflow tracts (RVOT/LVOT) arrhythmia origins from 12-lead electrocardiograms (ECGs); however, the procedure is complicated. A deep learning (DL) model, a form of artificial intelligence, can directly use ECGs and depict the importance of the leads and waveforms. This study aimed to create a visualized DL model that could classify arrhythmia origins more accurately.Methods and Results: This study enrolled 80 patients who underwent catheter ablation. A convolutional neural network-based model that could classify arrhythmia origins with 12-lead ECGs and visualize the leads that contributed to the diagnosis using a gradient-weighted class activation mapping method was developed. The average prediction results of the origins by the DL model were 89.4% (88.2-90.6) for accuracy and 95.2% (94.3-96.2) for recall, which were significantly better than when a conventional algorithm is used. The ratio of the contribution to the prediction differed between RVOT and LVOT origins. Although leads V1 to V3 and the limb leads had a focused balance in the LVOT group, the contribution ratio of leads aVR, aVL, and aVF was higher in the RVOT group. CONCLUSIONS: This study diagnosed the arrhythmia origins more accurately than the conventional algorithm, and clarified which part of the 12-lead waveforms contributed to the diagnosis. The visualized DL model was convincing and may play a role in understanding the pathogenesis of arrhythmias.

  Jul. 2022, Circulation journal : official journal of the Japanese Circulation Society, 86(8) (8), 1273 - 1280, English, Domestic magazine

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• The impact of the atrial wall thickness in normal/mild late-gadolinium enhancement areas on atrial fibrillation rotors in persistent atrial fibrillation patients.

  Toshihiro Nakamura, Kunihiko Kiuchi, Koji Fukuzawa, Mitsuru Takami, Yoshiaki Watanabe, Yu Izawa, Makoto Takemoto, Jun Sakai, Atsusuke Yatomi, Yusuke Sonoda, Hiroyuki Takahara, Kazutaka Nakasone, Kyoko Yamamoto, Yuya Suzuki, Ken-Ichi Tani, Noriyuki Negi, Atsushi Kono, Takashi Ashihara, Ken-Ichi Hirata

  Background: Some of atrial fibrillation (AF) drivers are found in normal/mild late-gadolinium enhancement (LGE) areas, as well as moderate ones. The atrial wall thickness (AWT) has been reported to be important as a possible AF substrate. However, the AWT and degree of LGEs as an AF substrate has not been fully validated in humans. Objective: The purpose of this study was to evaluate the impact of the AWT in normal/mild LGE areas on AF drivers. Methods: A total of 287 segments in 15 persistent AF patients were assessed. AF drivers were defined as non-passively activated areas (NPAs), where rotational activation was frequently observed, and were detected by the novel real-time phase mapping (ExTRa Mapping), mild LGE areas were defined as areas with a volume ratio of the enhancement voxel of 0% to <10%. The AWT was defined as the minimum distance from the manually determined endocardium to the epicardial border on the LGE-MRI. Results: NPAs were found in 20 (18.0%) of 131 normal/mild LGE areas where AWT was significantly thicker than that in the passively activated areas (PAs) (2.5 ± 0.3 vs. 2.2 ± 0.3 mm, p < .001). However, NPAs were found in 41 (26.3%) of 156 moderate LGE areas where AWT was thinner than that of PAs (2.1 ± 0.2 mm vs. 2.23 ± 0.3 mm, p = .02). An ROC curve analysis yielded an optimal cutoff value of 2.2 mm for predicting the presence of an NPA in normal/mild LGE areas. Conclusion: The location of AF drivers in normal/mild LGE areas might be more accurately identified by evaluating AWT.

  Apr. 2022, Journal of arrhythmia, 38(2) (2), 221 - 231, English, Domestic magazine

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Ventricular tachycardia based on cardiac sarcoidosis with a narrow QRS complex, ablated on the left ventricle free-wall

  Hiroshi Imada, Koji Fukuzawa, Yu Izawa, Kunihiko Kiuchi, Ken-ichi Hirata

  Indian Pacing and Electrophysiology Group, Sep. 2021, Indian Pacing and Electrophysiology Journal, 21(5) (5), 308 - 312, English

  Scientific journal


• Device nurse intervention facilitates the patients' adaptation to cardiac shock devices in the remote monitoring era.

  Tomomi Ogawa, Nao Saito, Koji Fukuzawa, Kunihiko Kiuchi, Mitsuru Takami, Megumi Hayashi, Ryo Tanioka, Masaya Ota, Keizo Komoriya, Ikuko Miyawaki, Ken-Ichi Hirata

  BACKGROUND: A substantial number of patients with shock devices (implantable cardioverter defibrillators [ICDs] or ICDs with resynchronization [CRTDs]) experience psychological distress. OBJECTIVE: We investigated the device nurse telephone intervention's effect on improving the patient's adaptation to shock devices, quality of life (QOL), and anxiety in the remote monitoring era. METHODS: The patient's adaptation to the device, health-related QOL, and anxiety were investigated by the modified Implanted Devices Adjustment-Japan score (IDAS), Short Form-36, and State-Trait Anxiety Inventory (STAI) before and 1-year after the device nurse telephone intervention, performed every 3 months. A total of 95 patients (median age 69 years and 25 females) participated. Sixty patients had ICDs and 35 CRTDs. Structural heart disease was observed in 72 patients, and idiopathic ventricular arrhythmias in the others. The mean left ventricular ejection fraction was 46% ± 15%. The median duration since the device implantation was 5.2 years. RESULTS: The total IDAS score significantly improved from 28.42 ± 7.11 at baseline to 26.77 ± 7.68 (p = 0.0076) at 1 year. Both the state and trait anxiety significantly improved (from 38.9 ± 9.6 to 35.3 ± 9.0 [<0.0001] and 38.8 ± 10.3 to 36.2±9.8 [p = 0.0044], respectively). The prevalence of patients with a state and trait anxiety of more than 40 decreased from 44 (46%) and 38 (40%) patients before the study to 27 (28 %) and 32 (34 %) at 1 year. The SF-36 mental component summary score significantly increased (50.8 ± 8.3 at baseline to 53.1 ± 7.7 at 1 year, p = 0.0031). CONCLUSIONS: The device nurse intervention facilitated the patient's adaptation to the shock device, increased the health-related QOL, and reduced the patient's anxiety.

  Aug. 2021, Pacing and clinical electrophysiology : PACE, English, International magazine

  Scientific journal


• Successful catheter ablation of postoperative atrial tachycardia with conduction disturbances: Assessment by late-gadolinium enhancement magnetic resonance imaging and high-resolution electro-anatomical mapping.

  Kazutaka Nakasone, Kunihiko Kiuchi, Mitsuru Takami, Yu Izawa, Koji Fukuzawa, Ken-Ichi Hirata

  Atrial tachycardia (AT) in the right atrium often occurs following open-heart surgery. Catheter ablation for these AT is challenging and can lead to unintended conduction block. We performed late-gadolinium enhancement magnetic resonance imaging (LGE-MRI) prior to catheter ablation and predicted wavefront propagation during SR as well as the slow conduction zone during tachycardia. LGE-MRI may assist predicting the conduction disturbance and reducing the risk of unexpected sinus exit block.

  Jun. 2021, Clinical case reports, 9(6) (6), e04198, English, International magazine

  Link to Kobe Univ. Repository (Kernel)


• Successful catheter ablation approach above the aortic sinus cusp eliminating a ventricular arrhythmia arising from the myocardial crescent beneath the interleaflet triangle: Late gadolinium enhancement magnetic resonance imaging assessment.

  Kunihiko Kiuchi, Yu Izawa, Hiroyuki Toh, Mitsuru Takami, Koji Fukuzawa, Ken-Ichi Hirata

  A 61-year-old female with 50 000 ventricular premature contractions and a reduced left ventricular ejection fraction of 35% was referred to our center. Although the origin was considered to originate from the junction between the left and right coronary cusp, a single radiofrequency application above the aortic sinus cusp could eliminate it. LGE-MRI was able to reveal the exact location of the single RF lesion.

  Jun. 2021, Clinical case reports, 9(6) (6), e04169, English, International magazine

  Link to Kobe Univ. Repository (Kernel)


• Practical Utility of the Postal Service in Delivering a Self-Fitted, Wearable, Long-Term Electrocardiogram Monitoring Device for Outpatient Care.

  Mitsuru Takami, Koji Fukuzawa, Kunihiko Kiuchi, Makoto Takemoto, Toshihiro Nakamura, Jun Sakai, Atsusuke Yatomi, Kazutaka Nakasone, Yusuke Sonoda, Kyoko Yamamoto, Hiroyuki Takahara, Yuya Suzuki, Kenichi Tani, Ken-Ichi Hirata

  Background: Demand is growing for remote electrocardiogram (ECG) monitoring systems in the COVID-19 era in Japan. This study describes initial experiences with a small wireless ECG monitoring device and the utility of delivery via the postal service for outpatient care in Japan. Methods and Results: Long-term ECG monitoring following postal delivery of the small ECG device was evaluated in 25 patients. The patients had no difficulties with either the postal delivery or self-fitting and wearing the devices. A median of 57 h monitoring per patient was performed. Arrhythmic events were detected in 8 patients. Most patients were satisfied with both the ECG devices and postal delivery. Conclusions: Postal delivery of ECG devices could be used in clinical practice to achieve less or no in-person contact during the COVID-19 era.

  Apr. 2021, Circulation reports, 3(5) (5), 294 - 299, English, Domestic magazine

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Accessory pathway analysis using a multimodal deep learning model.

  Makoto Nishimori, Kunihiko Kiuchi, Kunihiro Nishimura, Kengo Kusano, Akihiro Yoshida, Kazumasa Adachi, Yasutaka Hirayama, Yuichiro Miyazaki, Ryudo Fujiwara, Philipp Sommer, Mustapha El Hamriti, Hiroshi Imada, Makoto Takemoto, Mitsuru Takami, Masakazu Shinohara, Ryuji Toh, Koji Fukuzawa, Ken-Ichi Hirata

  Cardiac accessory pathways (APs) in Wolff-Parkinson-White (WPW) syndrome are conventionally diagnosed with decision tree algorithms; however, there are problems with clinical usage. We assessed the efficacy of the artificial intelligence model using electrocardiography (ECG) and chest X-rays to identify the location of APs. We retrospectively used ECG and chest X-rays to analyse 206 patients with WPW syndrome. Each AP location was defined by an electrophysiological study and divided into four classifications. We developed a deep learning model to classify AP locations and compared the accuracy with that of conventional algorithms. Moreover, 1519 chest X-ray samples from other datasets were used for prior learning, and the combined chest X-ray image and ECG data were put into the previous model to evaluate whether the accuracy improved. The convolutional neural network (CNN) model using ECG data was significantly more accurate than the conventional tree algorithm. In the multimodal model, which implemented input from the combined ECG and chest X-ray data, the accuracy was significantly improved. Deep learning with a combination of ECG and chest X-ray data could effectively identify the AP location, which may be a novel deep learning model for a multimodal model.

  Apr. 2021, Scientific reports, 11(1) (1), 8045 - 8045, English, International magazine

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Electrophysiological and Pathological Impact of Medium-Dose External Carbon Ion and Proton Beam Radiation on the Left Ventricle in an Animal Model.

  Mitsuru Takami, Tetsuya Hara, Tomoaki Okimoto, Masaki Suga, Koji Fukuzawa, Kunihiko Kiuchi, Hideya Suehiro, Tomomi Akita, Makoto Takemoto, Toshihiro Nakamura, Jun Sakai, Atsusuke Yatomi, Kazutaka Nakasone, Yusuke Sonoda, Kyoko Yamamoto, Hiroyuki Takahara, Ken-Ichi Hirata

  Background Medium-dose (25 gray) x-ray radiation therapy has recently been performed on patients with refractory ventricular tachyarrhythmias. Unlike x-ray, carbon ion and proton beam radiation can deliver most of their energy to the target tissues. This study investigated the electrophysiological and pathological changes caused by medium-dose carbon ion and proton beam radiation in the left ventricle (LV). Methods and Results External beam radiation in the whole LV was performed in 32 rabbits. A total of 9 rabbits were not irradiated (control). At the 3-month or 6-month follow-up, the animals underwent an open-chest electrophysiological study and were euthanized for histological analyses. No acute death occurred. Significant LV dysfunction was not seen. The surface ECG revealed a significant reduction in the P and QRS wave voltages in the radiation groups. The electrophysiological study showed that the local conduction times in each LV site were significantly longer and that the local LV bipolar voltages were significantly lower in the radiation groups than in the control rabbits. Histologically, apoptosis, fibrotic changes, and a decrease in the expression of the connexin 43 protein were seen in the LV myocardium. These changes were obvious at 3 months, and the effects were sustained 6 months after radiation. No histological changes were seen in the coronary artery and esophagus, but partial radiation pneumonitis was observed. Conclusions Medium-dose carbon ion and proton beam radiation in the whole LV resulted in a significant electrophysiological disturbance and pathological changes in the myocardium. Radiation of the arrhythmogenic substrate would modify the electrical status and potentially induce the antiarrhythmic effect.

  Apr. 2021, Journal of the American Heart Association, 10(7) (7), e019687, English, International magazine

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Feasibility of catheter ablation in patients with persistent atrial fibrillation guided by fragmented late-gadolinium enhancement areas.

  Kunihiko Kiuchi, Koji Fukuzawa, Mitsuru Takami, Yoshiaki Watanabe, Yu Izawa, Mayumi Shigeru, Hiroyuki Oonishi, Hideya Suehiro, Tomomi Akita, Makoto Takemoto, Atsusuke Yatomi, Toshihiro Nakamura, Jun Sakai, Kazutaka Nakasone, Yusuke Sonoda, Kyoko Yamamoto, Hiroyuki Takahara, Noriyuki Negi, Katsusuke Kyotani, Atsushi Kono, Ken-Ichi Hirata

  BACKGROUND: A computer simulation model has demonstrated that atrial fibrillation (AF) driver can be attached to heterogeneous fibrosis assessed by late gadolinium enhancement magnetic resonance imaging (LGE-MRI). However, it has not been well elucidated in patients with persistent AF. The aim of this study was to investigate whether radiofrequency (RF) applications in the fragmented LGE area (FLA) could terminate AF or convert it to atrial tachycardia (AT) and improve the rhythm outcome. METHODS: A total of 31 consecutive persistent AF patients with FLAs were enrolled (FLA ablation group, mean age: 69 ± 8 years, mean left atrial diameter: 42 ± 6 mm). A favorable response was defined as direct AF termination or AT conversion during RF applications at the FLA. The rhythm outcome was compared between the FLA ablation group and FLA burden-matched pulmonary vein isolation (PVI) group. RESULTS: Favorable responses were found in 15 (48%) of 31 patients in the FLA group (AF termination in seven, AT conversion in eight patients), but not in the PVI group. AF recurrence at 12 months follow-up was significantly less in the FLA ablation group than in the PVI group (4 [13%] vs. 12 [39%] of 31 patients, log-rank p = .023). In patients with a favorable response, AT recurred in 1 (7%) of 15 patients, but AF did not. CONCLUSIONS: FLA ablation could terminate AF or convert it to AT in half of the patients. No AF recurrence was documented in patients with a favorable response.

  Apr. 2021, Journal of cardiovascular electrophysiology, 32(4) (4), 1014 - 1023, English, International magazine

  Scientific journal


• Circulating intermediate monocytes and atrial structural remodeling associated with atrial fibrillation recurrence after catheter ablation.

  Hideya Suehiro, Kunihiko Kiuchi, Koji Fukuzawa, Naofumi Yoshida, Mitsuru Takami, Yoshiaki Watanabe, Yu Izawa, Tomomi Akita, Makoto Takemoto, Jun Sakai, Toshihiro Nakamura, Atsusuke Yatomi, Hiroyuki Takahara, Yusuke Sonoda, Kazutaka Nakasone, Kyoko Yamamoto, Tomoya Yamashita, Ken-Ichi Hirata

  BACKGROUND: Inflammation, such as that associated with intermediate CD14++ CD16+ monocytes and atrial structural remodeling (SRM), may be important in the recurrence of atrial fibrillation (AF) after catheter ablation. However, the relationship between the intermediate CD14++ CD16+ monocytes, SRM, and AF recurrence is unclear. METHODS: Twenty-four patients with AF were enrolled. The proportion of intermediate monocytes (PIM) was assessed before ablation by flow cytometry. As a surrogate marker of SRM, the volume ratio (VR) of signal intensity greater than 1 standard deviation on late-gadolinium enhancement magnetic resonance imaging (LGE-MRI) was calculated. We investigated whether PIM correlated with SRM on LGE-MRI and determined the optimal cutoff value for predicting AF recurrence. RESULTS: Univariate analysis revealed positive correlations between PIM and BNP with SRM (PIM: r = .593, p = .002; BNP: r = .567, p = .004). Multivariable analysis revealed that PIM was independently associated with VR on LGE-MRI (β = .522; p = .033). The finding of an area under the receiver operating characteristic curve of 0.750 revealed that a VR ≥ 13.3% on LGE-MRI as the optimal cutoff value to predict AF recurrence with 80% sensitivity and 71% specificity, which was associated with PIM ≥ 10.0%. CONCLUSION: Intermediate monocytes were significantly positively correlated with SRM. PIM ≥ 10% was associated with a VR ≥ 13.3% on LGE-MRI, which predicted AF recurrence after catheter ablation.

  Apr. 2021, Journal of cardiovascular electrophysiology, 32(4) (4), 1035 - 1043, English, International magazine

  Scientific journal


• Late-gadolinium enhancement properties associated with atrial fibrillation rotors in patients with persistent atrial fibrillation.

  Toshihiro Nakamura, Kunihiko Kiuchi, Koji Fukuzawa, Mitsuru Takami, Yoshiaki Watanabe, Yu Izawa, Hideya Suehiro, Tomomi Akita, Makoto Takemoto, Jun Sakai, Atsusuke Yatomi, Yusuke Sonoda, Hiroyuki Takahara, Kazutaka Nakasone, Kyoko Yamamoto, Noriyuki Negi, Atsushi Kono, Takashi Ashihara, Ken-Ichi Hirata

  BACKGROUND: A computational model demonstrated that atrial fibrillation (AF) rotors could be distributed in patchy late-gadolinium enhancement (LGE) areas and play an important role in AF drivers. However, this was not validated in humans. OBJECTIVE: The purpose of this study was to evaluate the LGE properties of AF rotors in patients with persistent AF. METHODS: A total of 287 segments in 15 patients with persistent AF (long-standing persistent AF in 9 patients) that underwent AF ablation were assessed. Non-passively activated areas (NPAs), where rotational activation (AF rotor) was frequently observed, were detected by the novel real-time phase mapping (ExTRa Mapping). The properties of the LGE areas were assessed using the LGE heterogeneity and the density which was evaluated by the entropy (LGE-entropy) and the volume ratio of the enhancement voxel (LGE-volume ratio), respectively. RESULTS: NPAs were found in 61 (21%) of 287 segments and were mostly found around the pulmonary vein antrum. A receiver operating characteristic curve analysis yielded an optimal cutoff value of 5.7% and 10% for the LGE-entropy and LGE-volume ratio, respectively. The incidence of NPAs was significantly higher at segments with an LGE-entropy of >5.7 and LGE-volume ratio of >10% than at the other segments (38 [30%] of 126 vs. 23 [14%] of 161 segments; p = .001). No NPAs were found at segments with an LGE-volume ratio of >50% regardless of the LGE-entropy. Of five patients with AF recurrence, NPAs outside the PV antrum were not ablated in three patients and the remaining NPAs were ablated, but their LGE-entropy and LGE-volume ratio were low. CONCLUSION: AF rotors are mostly distributed in relatively weak and much more heterogenous LGE areas.

  Apr. 2021, Journal of cardiovascular electrophysiology, 32(4) (4), 1005 - 1013, English, International magazine

  Scientific journal


• The Lesion Continuity after Pulmonary Vein Isolation with LSI of 5 vs 6: Late-gadolinium Enhancement Magnetic Resonance Imaging(LGE-MRI) Analysis(和訳中)

  Takahara Hiroyuki, Kiuchi Kunihiko, Fukuzawa Koji, Takami Mitsuru, Izawa Yu, Takemoto Makoto, Sakai Jun, Nakamura Toshihiro, Yatomi Atsusuke, Nakasone Kazutaka, Sonoda Yusuke, Yamamoto Kyoko, Suzuki Yuya, Tani Kenichi, Hirata Ken-Ichi

  (一社)日本循環器学会, Mar. 2021, 日本循環器学会学術集会抄録集, 85回, OE022 - 7, English


• The Relationship between AF Rotor Detected by ExTRa Mapping and Tissue Property Assessed by LGE-MRI in Persistent Atrial Fibrillation Patients(和訳中)

  Nakamura Toshihiro, Kiuchi Kunihiko, Fukuzawa Koji, Takami Mitsuru, Izawa Yu, Takemoto Makoto, Sakai Jun, Yatomi Atsusuke, Nakasone Kazutaka, Sonoda Yusuke, Yamamoto Kyoko, Takahara Hiroyuki, Suzuki Yuya, Tani Kenichi, Ashihara Takashi, Hirata Ken-Ichi

  (一社)日本循環器学会, Mar. 2021, 日本循環器学会学術集会抄録集, 85回, OE032 - 2, English


• Acute Response and Rhythm Outcome of the Patchy Late-gadolinium Enhancement Sites Ablation in Patients with Atrial Fibrillation: LGE-MRI Analysis(和訳中)

  Kiuchi Kunihiko, Fukuzawa Koji, Takami Mitsuru, Izawa Yu, Takemoto Makoto, Nakamura Toshihiro, Sakai Jun, Yatomi Atsusuke, Nakasone Kazutaka, Sonoda Yusuke, Yamamoto Kyoko, Takahara Hiroyuki, Suzuki Yuya, Tani Kenichi, Hirata Ken-Ichi

  (一社)日本循環器学会, Mar. 2021, 日本循環器学会学術集会抄録集, 85回, OE045 - 1, English


• The Importance of the HCM Phenotype in the Management of Ventricular Arrhythmias and Implanted Cardioverter Defibrillators(和訳中)

  Nakasone Kazutaka, Fukuzawa Koji, Kiuchi Kunihiko, Takami Mitsuru, Takemoto Makoto, Sakai Jun, Yatomi Atsusuke, Nakamura Toshihiro, Sonoda Yusuke, Takahara Hiroyuki, Yamamoto Kyoko, Suzuki Yuya, Tani Kenichi, Hirata Ken-Ichi

  (一社)日本循環器学会, Mar. 2021, 日本循環器学会学術集会抄録集, 85回, OE075 - 1, English


• Clinical Outcomes Following Upgrade to Cardiac Resynchronization Therapy in Patients with Cardiac Sarcoidosis(和訳中)

  Suzuki Yuya, Takami Mitsuru, Fukuzawa Koji, Kiuchi Kunihiko, Takemoto Makoto, Sakai Jun, Nakamura Toshihiro, Yatomi Atsusuke, Sonoda Yusuke, Takahara Hiroyuki, Nakasone Kazutaka, Yamamoto Kyoko, Tani Kenichi, Hirata Ken-Ichi

  (一社)日本循環器学会, Mar. 2021, 日本循環器学会学術集会抄録集, 85回, OE075 - 4, English


• Net Clinical Benefit of Oral Anticoagulation Therapy in Elderly Patients with Atrial Fibrillation: The Hyogo AF Network(HAF-NET) Registry(和訳中)

  Yatomi Atsusuke, Kiuchi Kunihiko, Fukuzawa Koji, Takami Mitsuru, Takemoto Makoto, Sakai Jun, Nakamura Toshihiro, Sonoda Yusuke, Takahara Hiroyuki, Nakasone Kazutaka, Yamamoto Kyoko, Suzuki Yuya, Tani Kenichi, Yoshida Akihiro, Takeuchi Motoshi, Hirata Ken-Ichi

  (一社)日本循環器学会, Mar. 2021, 日本循環器学会学術集会抄録集, 85回, OE135 - 3, English


• Incidence and Characteristics of Coronary Artery Spasms Related to Atrial Fibrillation Ablation Procedures - Large-Scale Multicenter Analysis.

  Toshihiro Nakamura, Mitsuru Takami, Koji Fukuzawa, Kunihiko Kiuchi, Hiroyuki Kono, Atsushi Kobori, Yuichiro Sakamoto, Ryuta Watanabe, Yasuo Okumura, Soichiro Yamashita, Kohei Yamashiro, Koji Miyamoto, Kengo Kusano, Takashi Kanda, Masaharu Masuda, Kazuyasu Yoshitani, Akihiro Yoshida, Yasutaka Hirayama, Kazumasa Adachi, Takanao Mine, Akira Shimane, Masafumi Takeda, Asumi Takei, Katsunori Okajima, Ryudo Fujiwara, Ken-Ichi Hirata

  BACKGROUND: Coronary artery spasms (CASs), which can cause angina attacks and sudden death, have been recently reported during catheter ablation. The aim of the present study was to report the incidence, characteristics, and prognosis of CASs related to atrial fibrillation (AF) ablation procedures.Methods and Results:The AF ablation records of 22,232 patients treated in 15 Japanese hospitals were reviewed. CASs associated with AF ablation occurred in 42 of 22,232 patients (0.19%). CASs occurred during ablation energy applications in 21 patients (50%). CASs also occurred before ablation in 9 patients (21%) and after ablation in 12 patients (29%). The initial change in the electrocardiogram was ST-segment elevation in the inferior leads in 33 patients (79%). Emergency coronary angiography revealed coronary artery stenosis and occlusions, which were relieved by nitrate administration. No air bubbles were observed. A comparison of the incidence of CASs during pulmonary vein isolation between the different ablation energy sources revealed a significantly higher incidence with cryoballoon ablation (11/3,288; 0.34%) than with radiofrequency catheter, hot balloon, or laser balloon ablation (8/18,596 [0.04%], 0/237 [0%], and 0/111 [0%], respectively; P<0.001). CASs most often occurred during ablation of the left superior pulmonary vein. All patients recovered without sequelae. CONCLUSIONS: CASs related to AF ablation are rare, but should be considered as a dangerous complication that can occur anytime during the periprocedural period.

  Feb. 2021, Circulation journal : official journal of the Japanese Circulation Society, 85(3) (3), 264 - 271, English, Domestic magazine

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• 心房細動患者への小型ワイヤレスECGモニタリング装置の郵送サービスの有用性(The utility of using the postal delivery service to deliver small wireless ECG monitoring devices to patients with atrial fibrillation)

  Takami Mitsuru, Fukuzawa Koji, Kiuchi Kunihiko, Takemoto Makoto, Sakai Jun, Nakamura Toshihiro, Yatomi Atsusuke, Sonoda Yusuke, Takahara Hiroyuki, Nakasone Kazutaka, Yamamoto Kyoko, Suzuki Yuya, Tani Kenichi, Hirata Ken-ichi

  (一社)日本遠隔医療学会, Feb. 2021, 日本遠隔医療学会学術大会プログラム・抄録集, 24回, 59 - 59, English


• Visualization of intensive atrial inflammation and fibrosis after cryoballoon ablation: PET/MRI and LGE-MRI analysis.

  Kunihiko Kiuchi, Koji Fukuzawa, Munenobu Nogami, Yoshiaki Watanabe, Mitsuru Takami, Yu Izawa, Noriyuki Negi, Katsusuke Kyotani, Shumpei Mori, Ken-Ichi Hirata

  Background: Atrial inflammation plays an important role in initiating atrial fibrosis, which could perpetuate atrial fibrillation (AF). However, the method of visualization of atrial inflammation has not been established. We sought to investigate whether the intensive atrial inflammation caused by cryoballoon ablation (CBA) could be detected by positron emission tomography/ magnetic resonance imaging (PET/MRI) and whether the atrial inflammation could be associated with consequent fibrosis. Methods: A total of 10 paroxysmal atrial fibrillation patients after CBA were enrolled. To detect and quantify intensive atrial inflammation, PET/MRI was performed to assess regional 18F-fluorodeoxyglucose (18F-FDG) uptake one day after the CBA, and the standardized uptake values (SUV) max were compared between the pulmonary vein (PV) antrum where CBA could be applied and the healthy left atrial (LA) wall where CBA could not be applied. Furthermore, the atrial inflammation one day after the procedure and atrial fibrosis areas one month after the procedure were three-dimensionally quantified by PET/MRI and late-gadolinium enhancement magnetic resonance imaging (LGE-MRI), respectively. Results: The mean SUV max at the PV antrum was significantly higher than that on the healthy LA wall (2.12 ± 0.35 vs 1.73 ± 0.30, P = .00021). The volume of the atrial inflammation strongly correlated with that of the atrial fibrosis (r = .94 [.76-.99], P = .00006). Conclusions: The atrial inflammation after CBA could be detected by PET/MRI. CBA-induced atrial inflammation was strongly associated with consequent lesion maturation.

  Feb. 2021, Journal of arrhythmia, 37(1) (1), 52 - 59, English, Domestic magazine

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• A rare case with Uhl's anomaly whose hemodynamics largely dependent on right atrial hyper-contraction and a patent foramen ovale - A "double-edged sword" of ventricularized right atrium.

  Keisuke Miwa, Kensuke Matsumoto, Hiroshi Fujita, Eriko Hisamatsu, Hidekazu Tanaka, Koji Fukuzawa, Naoe Jimbo, Takeaki Shirai, Kenichi Hirata

  We report the case of a 31-year-old man with Uhl's anomaly. Echocardiography revealed severely enlarged nonfunctioning right ventricle and unusual findings of the premature opening of the pulmonary valve along with substantial forward flow during late-diastole, indicating that pulmonary circulation was largely dependent on compensatory right atrial contraction. Moreover, right-to-left shunt through the patent foramen ovale (PFO) achieved systemic circulation at the expense of severe hypoxia. During accelerated idioventricular rhythm (AIVR) accompanied by ventriculo-atrial (VA) conduction, hypoxemia deteriorated further because of an increased right-to-left shunt through the PFO. We report the case of an adult with Uhl's anomaly whose hemodynamics was largely dependent on the ventricularized right atrium and PFO. Although the unique hemodynamics contributed to his survival into adulthood, detrimental aspects manifested themselves during AIVR with VA conduction like a "double-edged sword." .

  Dec. 2020, Journal of cardiology cases, 22(6) (6), 305 - 308, English, Domestic magazine


• Lesion characteristics between cryoballoon ablation and radiofrequency ablation with a contact force-sensing catheter: Late-gadolinium enhancement magnetic resonance imaging assessment.

  Jun Kurose, Kunihiko Kiuchi, Koji Fukuzawa, Mitsuru Takami, Shumpei Mori, Hideya Suehiro, Yu-Ichi Nagamatsu, Tomomi Akita, Makoto Takemoto, Atsusuke Yatomi, Toshihiro Nakamura, Jun Sakai, Yoshiaki Watanabe, Shinsuke Shimoyama, Noriyuki Negi, Katsusuke Kyotani, Ken-Ichi Hirata

  BACKGROUND: Pulmonary vein isolation (PVI) lesions after cryoballoon ablation (CBA) are characterized as a wider and more continuous than that after conventional radiofrequency catheter ablation (RFCA) without the contact force (CF)-sensing technology. However, the impact on the lesion characteristics of ablation with a CF-sensing catheter has not been well discussed. We sought to assess the lesions using late-gadolinium enhancement magnetic resonance imaging (LGE-MRI) and to compare the differences between the two groups (CB group vs. RF group). METHODS: A total of 30 consecutive patients who underwent PVI were enrolled (CB group, 18; RF group, 12). The RF applications were delivered with a target lesion size index (LSI) of 5. The PVI lesions were assessed by LGE-MRI 3 months after the PVI. The region around the PV was divided into eight segments: roof, anterior-superior, anterior carina, anterior inferior, bottom, posterior inferior, posterior carina, and posterior superior segment. The lesion width and visual gap of each segment were compared between the two groups. The visual gaps were defined as no-enhancement site of >4 mm. RESULTS: The mean LSI was 4.7 ± 0.7. The lesion width was significantly wider but the visual gaps were more frequently documented at the bottom segment of right PV in the CBA group (lesion width: 8.1 ± 2.2 vs. 6.3 ± 2.2 mm; p = .032; visual gap at the bottom segment or right PV: 39% vs. 0%; p = .016). CONCLUSIONS: The PVI lesion was wider after CBA, while the visual gaps were fewer after RFCA with a CF-sensing catheter.

  Oct. 2020, Journal of cardiovascular electrophysiology, 31(10) (10), 2572 - 2581, English, International magazine

  Scientific journal


• Gut microbial composition in patients with atrial fibrillation: effects of diet and drugs.

  Tokiko Tabata, Tomoya Yamashita, Koji Hosomi, Jonguk Park, Tomohiro Hayashi, Naofumi Yoshida, Yoshihiro Saito, Koji Fukuzawa, Kana Konishi, Haruka Murakami, Hitoshi Kawashima, Kenji Mizuguchi, Motohiko Miyachi, Jun Kunisawa, Ken-Ichi Hirata

  Atrial fibrillation (AF) reduces the quality of life by triggering stroke and heart failure. The association between AF onset and gut metabolites suggests a causal relationship between AF and gut microbiota dysbiosis; however, the relationship remains poorly understood. We prospectively enrolled 34 hospitalized patients with AF and 66 age-, sex-, and comorbidity-matched control subjects without a history of AF. Gut microbial compositions were evaluated by amplicon sequencing targeting the 16S ribosomal RNA gene. We assessed differences in dietary habits by using a brief-type self-administered diet history questionnaire (BDHQ). Gut microbial richness was lower in AF patients, although the diversity of gut microbiota did not differ between the two groups. At the genus level, Enterobacter was depleted, while Parabacteroides, Lachnoclostridium, Streptococcus, and Alistipes were enriched in AF patients compared to control subjects. The BDHQ revealed that the intake of n-3 polyunsaturated fatty acids and eicosadienoic acid was higher in AF patients. Our results suggested that AF patients had altered gut microbial composition in connection with dietary habits.

  Jul. 2020, Heart and vessels, 36(1) (1), 105 - 114, English, Domestic magazine

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• 遠隔モニタリング診療を受けている心臓デバイス(ICD,CRT-D)植込み患者へのデバイスナースによる支援効果(第1報)

  小川 智美, 福沢 公二, 齊藤 奈緒, 谷岡 怜, 林 女久美, 木内 邦彦, 太田 雅也, 籠谷 圭造, 宮脇 郁子, 平田 健一

  (一社)日本循環器学会, Jul. 2020, 日本循環器学会学術集会抄録集, 84回, CP6 - 4, Japanese


• 左室心尖部の局所的な菲薄化 予期せぬ共通所見とその臨床的意義(Localized Thinning of the Left Ventricular Apex: Unexpectedly Common Findings and Its Clinical Implications)

  山本 恭子, 森 俊平, 鳥羽 敬義, 伊澤 有, 福沢 公二, 河野 淳, 平田 健一

  (一社)日本循環器学会, Jul. 2020, 日本循環器学会学術集会抄録集, 84回, PJ17 - 8, English


• 心房細動患者における循環血中CD14++CD16+単球上のToll様受容体4のアップレギュレーションは低電位領域と相関している(Toll-like Receptor 4 Upregulation on Circulating CD14++CD16+monocytes Correlates with the Low-voltage Zones in Patients with Atrial Fibrillation)

  末廣 英也, 福沢 公二, 吉田 尚史, 木内 邦彦, 高見 充, 秋田 朋己, 竹本 良, 坂井 淳, 中村 俊宏, 矢冨 敦亮, 園田 祐介, 高原 宏之, 仲宗根 和孝, 山本 恭子, 山下 智也, 平田 健一

  (一社)日本循環器学会, Jul. 2020, 日本循環器学会学術集会抄録集, 84回, OJ15 - 4, English


• ラジオ波焼灼術が心房細動患者におけるpatchy遅延造影部位に及ぼす影響 LGE-MRIによる解析(The Impact of the Radiofrequency Application on the Patchy Late-gadolinium Enhancement Sites in Patients with Atrial Fibrillation: LGE-MRI Analysis)

  Kiuchi Kunihiko, Fukuzawa Koji, Takami Mitsuru, Shimoyama Shinsuke, Watanabe Yoshiaki, Izawa Yu, Shigeru Mayumi, Oonishi Hiroyuki, Suehiro Hideya, Akita Tomomi, Takemoto Makoto, Nakamura Toshihiro, Sakai Jun, Yatomi Atsusuke, Nakasone Kazutaka, Sonoda Yusuke, Yamamoto Kyoko, Takahara Hiroyuki, Negi Noriyuki, Kyotani Katsusuke, Kono Atsushi, Kono Atsushi

  (一社)日本循環器学会, Jul. 2020, 日本循環器学会学術集会抄録集, 84回, OE76 - 2, English


• 心房細動患者におけるLGE-MRIで描出された線維化領域とExTRa Mappingで記録された非受動的興奮領域との関連(The Relationship between Fibrotic Areas Assessed by LGE-MRI and Non-Passively Activated Areas Detected by ExTRa Mapping in Atrial Fibrillation Patients)

  Nakamura Toshihiro, Kiuchi Kunihiko, Fukuzawa Koji, Takami Mitsuru, Shimoyama Shinsuke, Watanabe Yoshiaki, Izawa Yu, Shigeru Mayumi, Oonishi Hiroyuki, Suehiro Hideya, Akita Tomomi, Takemoto Makoto, Sakai Jun, Yatomi Atsusuke, Nakasone Kazutaka, Sonoda Yusuke, Yamamoto Kyoko, Takahara Hiroyuki, Negi Noriyuki, Kyotani Matsusuke, Kono Atsushi, Kono Atsushi, Ashihara Takashi

  (一社)日本循環器学会, Jul. 2020, 日本循環器学会学術集会抄録集, 84回, OE104 - 1, English


• 非侵襲的な粒子線外部照射が動物心臓の電気生理学的、病理学的変化に及ぼす影響(Impact of Non-invasive External Particle Beam Radiation on the Electrophysiological and Pathological Changes in the Animal Heart)

  Takami Mitsuru, Hara Tetsuya, Okimoto Tomoaki, Suga Masaki, Fukuzawa Koji, Kiuchi Kunihiko, Suehiro Hideya, Akita Tomomi, Takemoto Makoto, Nakamura Toshihiro, Sakai Jun, Yatomi Atsusuke, Nakasone Kazutaka, Sonoda Yusuke, Yamamoto Kyoko, Takahara Hiroyuki, Hirata Ken-ichi

  (一社)日本循環器学会, Jul. 2020, 日本循環器学会学術集会抄録集, 84回, OE127 - 2, English


• 植込み型心臓電気デバイス感染の微生物学的特徴と抗生物質の選択(Microbiological Characteristics and Selection of Antibiotics for Cardiac Implantable Electronic Device Infection in Our Hospital)

  Sonoda Yusuke, Fukuzawa Koji, Kiuchi Kunihiko, Takami Mitsuru, Suehiro Hideya, Akita Tomomi, Takemoto Makoto, Sakai Jun, Yatomi Atsusuke, Nakamura Toshihiro, Takahara Hiroyuki, Nakasone Kazutaka, Yamamoto Kyoko, Hirata Ken-ichi

  (一社)日本循環器学会, Jul. 2020, 日本循環器学会学術集会抄録集, 84回, PE55 - 4, English


• 遠隔モニタリング診療を受けている心臓デバイス(ICD,CRT-D)植込み患者へのデバイスナースによる支援効果(第1報)

  小川 智美, 福沢 公二, 齊藤 奈緒, 谷岡 怜, 林 女久美, 木内 邦彦, 太田 雅也, 籠谷 圭造, 宮脇 郁子, 平田 健一

  (一社)日本循環器学会, Jul. 2020, 日本循環器学会学術集会抄録集, 84回, CP6 - 4, Japanese


• Localized Thinning of the Left Ventricular Apex: Unexpectedly Common Findings and Its Clinical Implications(和訳中)

  山本 恭子, 森 俊平, 鳥羽 敬義, 伊澤 有, 福沢 公二, 河野 淳, 平田 健一

  (一社)日本循環器学会, Jul. 2020, 日本循環器学会学術集会抄録集, 84回, PJ17 - 8, English


• Toll-like Receptor 4 Upregulation on Circulating CD14++CD16+monocytes Correlates with the Low-voltage Zones in Patients with Atrial Fibrillation(和訳中)

  末廣 英也, 福沢 公二, 吉田 尚史, 木内 邦彦, 高見 充, 秋田 朋己, 竹本 良, 坂井 淳, 中村 俊宏, 矢冨 敦亮, 園田 祐介, 高原 宏之, 仲宗根 和孝, 山本 恭子, 山下 智也, 平田 健一

  (一社)日本循環器学会, Jul. 2020, 日本循環器学会学術集会抄録集, 84回, OJ15 - 4, English


• Circulating intermediate monocytes and toll-like receptor 4 correlate with low-voltage zones in atrial fibrillation.

  Hideya Suehiro, Koji Fukuzawa, Naofumi Yoshida, Kunihiko Kiuchi, Mitsuru Takami, Tomomi Akita, Tokiko Tabata, Makoto Takemoto, Jun Sakai, Toshihiro Nakamura, Atsusuke Yatomi, Hiroyuki Takahara, Yusuke Sonoda, Kazutake Nakasone, Kyoko Yamamoto, Atsushi Suzuki, Tomoya Yamashita, Ken-Ichi Hirata

  Inflammation has been suggested to play a key role in the pathogenesis of atrial fibrillation (AF). Our hypothesis was that this inflammation, mediated by intermediate monocytes and toll-like receptor 4 (TLR4), causes the formation and expansion of low-voltage zones (LVZs). Prior to ablation, the monocyte subsets of 78 AF patients and TLR4 expression of 66 AF patients were analyzed via a flow cytometric analysis. Based on the CD14/CD16 expression, the monocytes were divided into three subsets: classical, intermediate, and non-classical. At the beginning of the ablation session, voltage mapping was performed. LVZs were defined as all bipolar electrogram amplitudes of < 0.5 mV. Correlations between the flow cytometric analysis results and presence of LVZs, as well as the total area of the LVZ, were examined. Patients with LVZs clearly had a higher proportion of intermediate monocytes (10.0 ± 3.6% vs. 7.2 ± 2.7%, p < 0.001) than those without LVZs. TLR4 was much more frequently expressed in the intermediate monocytes than other two monocyte subsets (p < 0.001). Moreover, the TLR4 expression level in intermediate monocytes correlated positively with the total area of the LVZs (r = 0.267, p = 0.030), especially in patients with paroxysmal AF (r = 0.365, p = 0.015). The intermediate monocytes and TLR4 expression positively correlated with LVZs in AF patients.

  Jun. 2020, Heart and vessels, 35(12) (12), 1717 - 1726, English, Domestic magazine

  [Refereed]

  Scientific journal


• A multicenter study comparing the outcome of catheter ablation of atrial fibrillation between cryoballoon and radiofrequency ablation in patients with heart failure (CRABL-HF): Study design.

  Koji Miyamoto, Kanae Hasegawa, Hiroki Takahashi, Yoh Masue, Naoya Kataoka, Koji Fukuzawa, Keiichi Ashikaga, Takashi Noda, Kazuhiro Satomi, Hiroshi Tada, Masahiko Takagi, Satoshi Yasuda, Kengo Kusano

  Background: Catheter ablation of atrial fibrillation (AF) is increasingly performed worldwide in patients with heart failure (HF). However, it has been recently emphasized that AF ablation in patients with HF is associated with increased risks of procedure-related complications and mortality. There are little data about the differences in the efficacy and safety between cryoballoon (CB) and radiofrequency (RF) ablation of AF in patients with HF. Methods: The CRABL-HF study is designed as a prospective, multicenter, open-label, controlled, and randomized clinical trial comparing the efficacy and safety of AF ablation between CB and RF ablation in patients with HF (LVEF ≤40%) (UMIN Clinical Trials Registry UMIN000032433). The CRABL-HF study will consist of 110 patients at multicenter in Japan. The patients will be registered and randomly assigned to either the CB ablation or RF ablation group with a 1:1 allocation. The primary endpoint of this study is the occurrence of atrial tachyarrhythmias (ATs) at 1 year with a blanking period of 90 days after ablation. Key secondary endpoints are the success rate of the pulmonary vein isolation, total procedural time, left atrial dwelling time, total fluoroscopy time, radiation exposure, complication rate, composite of all-cause mortality or HF hospitalizations, cardiovascular events, change in left ventricular ejection fraction, and change in quality of life. Results: The results of this study are currently under investigation. Conclusion: The CRABL-HF study is being conducted to compare the efficacy and safety of catheter ablation of AF between CB and RF ablation in patients with HF.

  Jun. 2020, Journal of arrhythmia, 36(3) (3), 449 - 455, English, Domestic magazine

  Scientific journal


• Cardiac resynchronization therapy improves left atrial reservoir function through resynchronization of the left atrium in patients with heart failure with reduced ejection fraction.

  Kumiko Dokuni, Kensuke Matsumoto, Kazuhiro Tatsumi, Makiko Suto, Hidekazu Tanaka, Koji Fukuzawa, Ken-Ichi Hirata

  This study aimed to test the hypothesis that left ventricular dyssynchrony may negatively affect left atrial (LA) dyssynchrony and reservoir function, and cardiac resynchronization therapy (CRT) may improve LA function. It also assessed, whether residual LA dyssynchrony affects the prognosis in patients with heart failure with reduced ejection fraction (HFrEF). Ninety subjects were included: 40 HFrEF patients with a wide-QRS complex (≧130 ms), 28 HFrEF patients with a narrow-QRS, and 22 normal controls. LA global longitudinal strain (LA-GLS) and LA dyssynchrony were quantified by speckle-tracking strain analysis. LA dyssynchrony was defined as the maximal difference of time-to-peak strain (LA time-diff). All patients with a wide-QRS underwent CRT, and event-free survival was tracked for 24 months. At baseline, LA dyssynchrony was significantly more pronounced in patients with a wide-QRS HFrEF (342 ± 126 ms) than that in patients with a narrow-QRS (236 ± 127 ms, P < 0.001) and controls (186 ± 78 ms, P < 0.001). Six months after CRT, LA-GLS significantly improved from 11.9 ± 4.7 to 19.6 ± 10.1% (P < 0.05) and LA time-diff was reduced from 338 ± 123 to 245 ± 141 ms (P < 0.05) in responders only. Patients with an LA time-diff < 202 ms and those with an LA-GLS ≧14.6% six months after CRT showed significantly better outcomes than the others (P < 0.05, respectively). Among the responders, those with an LA time-diff < 202 ms after CRT showed a better prognosis than others (P < 0.05). CRT improved LA dyssynchrony and reservoir function through the improved left ventricular coordination. Reduced LA dyssynchrony and improved LA reservoir function after CRT lead to better outcomes.

  Mar. 2020, The international journal of cardiovascular imaging, 36(7) (7), 1203 - 1212, English, International magazine

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Revisiting the prevalence and diversity of localized thinning of the left ventricular apex.

  Kyoko Yamamoto, Shumpei Mori, Koji Fukuzawa, Koji Miyamoto, Takayoshi Toba, Yu Izawa, Hidekazu Tanaka, Atsushi K Kono, Ken-Ichi Hirata

  BACKGROUND: The left ventricular apex commonly has a paper-thin structure. However, available data about its structure are limited to variable samples, methodologies, and results. OBJECTIVE: To investigate the structural anatomy of the left ventricular apex using living heart datasets with the latest computed tomography scanner. METHODS: One hundred thirty-one consecutive patients (median age, 73 years; 58% men) who underwent cardiac computed tomography were retrospectively analyzed. Patients with severe aortic stenosis were analyzed separately. Thickness and diameters of the thinnest part of the left ventricular apex during mid-diastole were measured using orthogonal multiplanar reconstruction images. The area of thinning was estimated using the formula for the ellipse. RESULTS: In 88 patients without severe aortic stenosis, the median thickness of the thinnest area of the left ventricular apex was only 0.9 mm. Among them, 74%, 99%, and 100% of cases displayed a left ventricular apex thinner than 1.0, 3.0, and 5.0 mm, respectively. The median area of the thinnest region was 5.6 mm2 . In 43 patients with severe aortic stenosis, the median thickness of the thinnest area of the left ventricular apex was 1.2 mm. Among them, 51%, 93%, and 100% of cases displayed a left ventricular apex thinner than 1.0, 3.0, and 5.0 mm, respectively. The median area of the thinnest region was 3.9 mm2 . CONCLUSIONS: Localized thinning of the left ventricular apex is unexceptional, regardless of aortic stenosis with concentric left ventricular hypertrophy, thus highlighting the need for a reappreciation of this feature to avoid inadvertent catastrophic complications.

  Feb. 2020, Journal of cardiovascular electrophysiology, 31(4) (4), 915 - 920, English, International magazine

  [Refereed]

  Scientific journal


• Visualization of Inflammation After Cryoballoon Ablation in Atrial Fibrillation Patients - Protocol for Proof-of-Concept Feasibility Trial.

  Kunihiko Kiuchi, Koji Fukuzawa, Munenobu Nogami, Yoshiaki Watanabe, Mitsuru Takami, Shumpei Mori, Shinsuke Shimoyama, Noriyuki Negi, Katsusuke Kyotani, Ken-Ichi Hirata

  Background: Atrial fibrosis and inflammation play important roles in perpetuating and initiating atrial fibrillation (AF). Although the fibrotic area can be visualized as a delayed enhancement area on late gadolinium enhancement magnetic resonance imaging (LGE-MRI), atrial inflammation has not yet been visualized on any imaging modality. We describe the protocol for a feasibility study to visualize atrial inflammation on positron emission tomography/MRI (PET/MRI). Methods and Results: This is a single-arm, prospective, open-label proof-of concept trial, involving AF patients after cryoballoon ablation (CBA). A total of 30 paroxysmal AF patients will be enrolled and undergo simultaneous PET/MRI for the assessment of regional 18F-fluorodeoxyglucose (18F-FDG) uptake 1 day after the CBA. Furthermore, LGE-MRI will be performed before CBA, and at 1 and 4 weeks after assessing the regional LGE area. The main outcome measures will be (1) the feasibility of imaging inflammation in the left atrium on PET/MRI; and (2) the safety of the intervention. Conclusions: There are few data on the visualization of atrial inflammation using PET/MRI. Establishing the visualization methodology will contribute to elucidating the fundamental histopathologic findings of the progress to fibrosis, and to the planning and execution of a larger definitive trial to test the usefulness of PET/MRI.

  Feb. 2020, Circulation reports, 1(3) (3), 149 - 152, English, Domestic magazine

  Scientific journal


• Different tissue thermodynamics between the 40 W and 20 W radiofrequency power settings under the same ablation index/lesion size index.

  Makoto Takemoto, Mitsuru Takami, Koji Fukuzawa, Kunihiko Kiuchi, Jun Kurose, Hideya Suehiro, Yuichi Nagamatsu, Tomomi Akita, Toshihiro Nakamura, Jun Sakai, Atsusuke Yatomi, Ken-Ichi Hirata

  INTRODUCTION: The ablation index (AI) and lesion size index (LSI) are novel markers for predicting the ablation lesion quality, however, collateral damage is still a concern. This study aimed to compare the lesion characteristics and tissue temperature profiles between 20 W (20 Ws) and 40 W (40 Ws) ablation settings under the same AI and LSI. METHODS: An ex vivo model consisting of swine myocardium (5-6 mm thickness) in a circulating, warmed saline bath was used. Twenty-one tissue temperature electrodes were used. Radiofrequency applications with different power settings were performed with a 10 to 12 g contact force until the AI and LSI reached 350 and 4.5, respectively. RESULTS: A total of 120 radiofrequency (RF) applications and 2520 tissue temperature profiles were analyzed. The speed of the tissue temperature rise with 40 Ws was significantly faster than that with 20 Ws. However, the maximum tissue temperature did not significantly differ between 20 and 40 Ws with the same AI (44.6°C ± 3.9°C vs 45.1°C ± 6.4°C, P = .73), and was significantly lower for 40 Ws with the same LSI (42.8°C ± 3.4°C vs 40.0°C ± 3.4°C, P = .003). For both the AI and LSI, the number of electrodes exhibiting high temperatures (≥39°C) was significantly larger and the duration of high tissue temperatures was significantly longer with 20 Ws. The thermal latency with 40 Ws was greater. CONCLUSIONS: Although the targeted AI and LSI were the same for both 20 and 40 Ws, the tissue temperature profiles differed greatly depending on the RF power setting. A high power setting based on the AI and LSI may reduce the collateral thermal damage.

  Jan. 2020, Journal of cardiovascular electrophysiology, 31(1) (1), 196 - 204, English, International magazine

  [Refereed]

  Scientific journal


• Association of Relatively Short Posterior Mitral Leaflet With Mitral Regurgitation in Patients With Atrial Fibrillation.

  Hiroki Takada, Hidekazu Tanaka, Shun Yokota, Jun Mukai, Makiko Suto, Fumitaka Soga, Yutaka Hatani, Hiroki Matsuzoe, Keiko Hatazawa, Kensuke Matsumoto, Koji Fukuzawa, Ken-Ichi Hirata

  BACKGROUND: The underlying mechanism of mitral regurgitation (MR) in atrial fibrillation (AF) is an isolated annulus dilation caused by left atrial (LA) remodeling. However, the association of mitral valve (MV) geometry with MR in AF patients remains unclear.Methods and Results:We studied 96 AF patients with preserved left ventricular ejection fraction (LVEF). MV geometry was evaluated with 3-dimensional transesophageal echocardiography (3D-TEE). Mitral annulus area of the MR group (n=11, ≥ moderate) was significantly larger (10.6±1.8 vs. 8.2±1.5 cm2, P<0.0001), and relative posterior mitral leaflet (PML) area (PML area / mitral annulus area) was significantly smaller (0.51±0.06 vs. 0.57±0.01, P=0.002) than in the non-MR group (n=85, Oct. 2019, Circulation journal : official journal of the Japanese Circulation Society, 83(11) (11), 2312 - 2319, English, Domestic magazine

  [Refereed]

  Scientific journal


• Lesion distribution after cryoballoon ablation and hotballoon ablation: Late-gadolinium enhancement magnetic resonance imaging analysis.

  Tomomi Akita, Kunihiko Kiuchi, Koji Fukuzawa, Akira Shimane, Sonoko Matsuyama, Mitsuru Takami, Jun Kurose, Hiroyuki Oonishi, Mayumi Shigeru, Yu-Ichi Nagamatsu, Hideya Suehiro, Makoto Takemoto, Toshihiro Nakamura, Jun Sakai, Atsusuke Yatomi, Shumpei Mori, Shinsuke Shimoyama, Noriyuki Negi, Katsusuke Kyotani, Ken-Ichi Hirata

  INTRODUCTION: Pulmonary vein isolation (PVI) lesions after cryoballoon ablation (CBA) are wide and continuous, however, the distribution can depend on the pulmonary vein (PV) size. We sought to assess the relationship between the lesion distribution and PV size after CBA and hotballoon ablation (HBA). METHODS AND RESULTS: A total of 80 consecutive patients who underwent PVI were enrolled (40 with CBA). The lesions were visualized by late-gadolinium enhancement magnetic resonance imaging. The lesion width, lesion gaps, and distance from the PV ostium (PVos) to distal lesion edge (DLE) were assessed. If the DLE extended inside the PV, the value was expressed as a negative value. Although the lesion width was significantly wider in the CB group (7.8 ± 2.0 vs 4.9 ± 1.0 mm, P < .001), the number of lesion gaps was significantly less in the HB group (2.9 ± 2.4 vs 1.3 ± 1.4 gaps, P = .001). The distance from the PVos to DLE was a negative value in both groups, but the impact was significantly greater (-1.5 ± 1.8 vs -0.2 ± 1.2 mm, P < .001) and negatively correlated with PV size in the CB group, but not in HB group (r = -0.27, P = .007). The AF recurrence 12 months after the procedure did not differ (5 [12.5%] of 40 in the CB group vs 4 [10%] of 40 in the HB group, P = .695). CONCLUSIONS: The PVI lesions after HBA were characterized by (a) narrower, but (b) more continuous, (c) smaller lesion inside the PV, and (d) irrespective of PV size as compared to that after CBA.

  Oct. 2019, Journal of cardiovascular electrophysiology, 30(10) (10), 1830 - 1840, English, International magazine

  [Refereed]

  Scientific journal


• One-year clinical outcomes of anticoagulation therapy among Japanese patients with atrial fibrillation: The Hyogo AF Network (HAF-NET) Registry.

  Kiyohiro Hyogo, Akihiro Yoshida, Motoshi Takeuchi, Kunihiko Kiuchi, Koji Fukuzawa, Mitsuru Takami, Atsushi Kobori, Katsunori Okajima, Michio Odake, Toshio Okada, Akira Shimane, Yasuhiro Kawahara, Junichi Sekiya, Hiroshi Sano, Yasunori Ichikawa, Ken-Ichi Hirata

  Background: Although anticoagulation therapy could reduce the risk of strokes in patients with atrial fibrillation (AF), large-scale investigations in the direct oral anticoagulant (DOAC) and AF catheter ablation (CA) era are lacking. Methods: This study was designed as a prospective, multicenter, observational study and a total of 2113 patients from 22 institutions were enrolled in the Hyogo area. Results: The mean age and CHADS2 score were 70.1 ± 10.8 years old and 1.5 ± 1.1, respectively. The follow-up period was 355 ± 43 days. CA was performed in 614 (29%) and DOACs were prescribed in 1118 (53%) patients. Ischemic strokes/systemic embolisms (SEs) and major bleeding occurred in 13 (0.6%) and 17 (0.8%) patients, respectively. New onset dementia, hospitalizations for cardiac events, and all-cause death occurred in eight (0.4%), 60 (2.8%), and 29 (1.4%) patients, respectively. A multivariate analysis demonstrated that persistent AF and the body weight (BW) were associated with ischemic strokes/SEs and major bleeding, respectively (persistent AF: hazard ratio, 9.57; 95%CI, 1.2-74.0; P = .03; BW: hazard ratio, 0.94; 95%CI, 0.90-0.99; P = .02). AFCA history was associated with the cardiac events (hazard ratio, 0.44; 95%CI, 0.20-0.99; P = .04). Age was associated with new onset dementia (hazard ratio, 1.1; 95%CI, 1.0-1.2; P = .03). Conclusions: In the DOAC and CA era, the incidence of ischemic strokes/SEs, major bleeding and cardiac events could be dramatically reduced in patients with AF. However, some unsolved issues of AF management still remain especially in elderly patients with persistent AF and a low BW.

  Oct. 2019, Journal of arrhythmia, 35(5) (5), 697 - 708, English, Domestic magazine

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Successful modulation of atrial fibrillation drivers anchoring to fibrotic tissue after box isolation using an online real-time phase mapping system: ExTRa Mapping.

  Toshihiro Nakamura, Kunihiko Kiuchi, Koji Fukuzawa, Mitsuru Takami, Tomomi Akita, Hideya Suehiro, Makoto Takemoto, Jun Sakai, Atsusuke Yatomi, Yusuke Sonoda, Hiroyuki Takahara, Kazutaka Nakasone, Kyoko Yamamoto, Ken-Ichi Hirata, Takashi Ashihara

  A 41-year-old man with persistent atrial fibrillation (AF) underwent radiofrequency (RF) catheter ablation using an online real-time phase mapping system: ExTRa Mapping. Box isolation could not terminate AF. Subsequently, RF applications on nonpassively activated areas (NPAs), where rotational activations were frequently observed, at the posterior bottom of left atrium outside of box lesion could convert AF to common atrial flutter. Of interest, the NPA near the posterior bottom were located on the patchy fibrotic tissue area assessed by the late-gadolinium enhancement magnetic resonance imaging. This indicated the possibility of the critical AF rotor meandering through the fibrotic tissue area.

  Oct. 2019, Journal of arrhythmia, 35(5) (5), 733 - 736, English, Domestic magazine

  [Refereed]

  Link to Kobe Univ. Repository (Kernel)


• Anatomical characteristics of the superior epigastric artery for epicardial ablation using the anterior approach.

  Yuichi Nagamatsu, Shumpei Mori, Koji Fukuzawa, Kunihiko Kiuchi, Mitsuru Takami, Yu Izawa, Shinsuke Shimoyama, Ken-Ichi Hirata

  Aug. 2019, Journal of cardiovascular electrophysiology, 30(8) (8), 1339 - 1340, English, International magazine

  [Refereed]

  Scientific journal


• A wide QRS complex tachycardia utilizing an atypical accessory pathway in latent Wolff-Parkinson-White syndrome: Manifestation of anterograde conduction during atrial fibrillation without delta waves in sinus rhythm.

  Toshihiro Nakamura, Koji Fukuzawa, Jun Kurose, Hideya Suehiro, Kensuke Matsumoto, Ken-Ichi Hirata

  Aug. 2019, HeartRhythm case reports, 5(8) (8), 419 - 423, English, International magazine

  [Refereed]

  Link to Kobe Univ. Repository (Kernel)


• Percutaneous Pericardiocentesis With the Anterior Approach: Demonstration of the Precise Course With Computed Tomography.

  Koji Fukuzawa, Yuichi Nagamatsu, Shumpei Mori, Kunihiko Kiuchi, Mitsuru Takami, Yu Izawa, Hiroki Konishi, Hirotoshi Ichibori, Hiroshi Imada, Kiyohiro Hyogo, Jun Kurose, Hideya Suehiro, Tomomi Akita, Makoto Takemoto, Shinsuke Shimoyama, Akihiro Yoshida, Ken-Ichi Hirata

  OBJECTIVES: This study aimed to confirm the precise course of a pericardiocentesis with the anterior approach using post-procedural computed tomography (CT). BACKGROUND: Percutaneous epicardial ventricular tachycardia (VT) ablation has been increasingly performed. Although the inferior approach has been the common method, the feasibility of the anterior approach has subsequently been reported. However, the precise course of the anterior approach has not been presented. METHODS: An epicardial ablation with the anterior approach was performed in 15 patients. At the end of the procedure, the epicardial sheath was exchanged for a drainage tube to monitor bleeding. Of those patients, in 9 procedures in 8 patients a CT scan was performed just after the procedure to confirm the course of the drainage tube and to rule out any complications. Epicardial ablation was indicated for a failed endocardial VT ablation in 7 patients and epicardial substrate modification in 1 patient with Brugada syndrome. RESULTS: Volume-rendered images reconstructed from CT demonstrated each course of the drainage tubes and their relation to the surrounding organs. These images revealed that the tube had a curved trace, and did not penetrate the diaphragm or pass through the abdominal cavity. No injury to the surrounding organs was detected in any of the cases. CONCLUSIONS: The precise course of the drainage tube placed along the trajectory of the anterior approach was able to be confirmed using post-procedural CT images. These images support the safety and feasibility of the anterior approach from the anatomic standpoint with a low incidence of abdominal viscera injury.

  Jun. 2019, JACC. Clinical electrophysiology, 5(6) (6), 730 - 741, English, International magazine

  [Refereed]

  Scientific journal


• Combined assessment of left atrial volume parameters for predicting recurrence of atrial fibrillation following pulmonary vein isolation in patients with paroxysmal atrial fibrillation.

  Fumitaka Soga, Hidekazu Tanaka, Yasuhide Mochizuki, Jun Mukai, Makiko Suto, Hiroki Takada, Yutaka Hatani, Hiroki Matsuzoe, Keiko Hatazawa, Hiroyuki Sano, Junichi Ooka, Hiroyuki Shimoura, Kensuke Matsumoto, Koji Fukuzawa, Ken-Ichi Hirata

  OBJECTIVES: Our aim was to test the hypothesis that comprehensive simplified left atrial (LA) assessment derived from routine echocardiography may be more useful than assessment of LA volume alone for predicting atrial fibrillation (AF) recurrence after pulmonary vein isolation (PVI). METHODS: We studied 156 patients with paroxysmal AF (PAF) who had undergone PVI. Echocardiography was performed within two days before PVI. Maximum (Max-LAVi) and minimum LA volume index (Min-LAVi) were calculated with the biplane modified Simpson's method, and then normalized to the body surface area. On the basis of previous findings, the predefined cutoff value of Max-LAVi for AF recurrence was set at Max-LAVi ≥ 34 mL/m2 . ΔLA volume index (ΔLAVi) was also calculated as Max-LAVi minus Min-LAVi. The follow-up period after PVI was 24 months. RESULTS: AF recurrence was observed in 35 patients. Multivariate logistic regression analysis showed that ΔLAVi (odds ratio [OR]: 1.131; 95% confidence interval [CI]: 1.057-1.221; P < 0.001) was an independent predictor of AF recurrence. Sequential logistic regression models for predicting AF recurrence revealed that a model based on clinical variables including age, gender and AF duration (χ2  = 1.65) was improved by the addition of Max-LAVi ≥ 34 mL/m2 (χ2  = 13.8; P < 0.001), and further improved by the addition of ΔLAVi (χ2  = 18.2; P = 0.036). Of note is that only 1.02 ± 0.10 minutes per patient was needed to obtain a comprehensive LA assessment that included Max-LAVi, Min-LAVi, and ΔLAVi. CONCLUSION: This easy-to-use comprehensive simplified LA approach from routine echocardiography may well have clinical implications for better management of PAF patients.

  May 2019, Echocardiography (Mount Kisco, N.Y.), 36(5) (5), 862 - 869, English, International magazine

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• LGE-MRI技術を用いた左心房線維性基質の画像化の実施可能性(Feasibility of Imaging Fibrotic Substrates in the Left Atrium Using LGE-MRI Technology)

  Kiuchi Kunihiko, Fukuzawa Koji, Takami Mitsuru, Mori Shunpei, Izawa Yu, Kurose Jun, Akita Tomomi, Suehiro Hideya, Nagamatsu Yuichi, Takemoto Makoto, Nakamura Toshihiro, Sakai Jun, Yatomi Atsusuke, Hirata Ken-ichi, Shimoyama Shinsuke, Negi Noriyuki, Kyotani Katsusuke

  (一社)日本循環器学会, Mar. 2019, 日本循環器学会学術集会抄録集, 83回, PL04 - 3, English


• Cryoballoonアブレーション治療および接触力センシング型カテーテルによるラジオ波焼灼療法におけるLGE-MRIにより評価した損傷特性(Lesion Characteristics Assessed by LGE-MRI between Cryo-balloon Ablation and Radiofrequency Ablation with Contact-force Sensing Catheter)

  Kurose Jun, Fukuzawa Koji, Kiuchi Kunihiko, Takami Mitsuru, Mori Shunpei, Izawa Yu, Suehiro Hideya, Nagamatsu Yuichi, Akita Tomomi, Takemoto Makoto, Nakamura Toshihiro, Sakai Jun, Yatomi Atsusuke, Hirata Ken-ichi, Shimoyama Shinsuke, Negi Noriyuki, Kyotani Katsusuke

  (一社)日本循環器学会, Mar. 2019, 日本循環器学会学術集会抄録集, 83回, OE01 - 5, English


• 各種高周波出力設定が同じアブレーション条件下の組織温度プロファイルに及ぼす影響(Impact of Different Radiofrequency Power Settings on Tissue Temperature Profiles under the Same Ablation Index)

  Takemoto Makoto, Takami Mitsuru, Sakai Jun, Nakamura Toshihiro, Yatomi Atsusuke, Akita Tomomi, Suehiro Hideya, Nagamatsu Yuichi, Kurose Jun, Kiuchi Kunihiko, Fukuzawa Koji, Hirata Ken-ichi

  (一社)日本循環器学会, Mar. 2019, 日本循環器学会学術集会抄録集, 83回, OE36 - 4, English


• 心臓デバイス(ICD、CRT-D、CRT-P)植込み心不全患者の活動と睡眠の実態

  植村 優衣, 齊藤 奈緒, 朴 成美, 白石 裕一, 福沢 公二, 多留 ちえみ, 宮脇 郁子

  (一社)日本循環器学会, Mar. 2019, 日本循環器学会学術集会抄録集, 83回, CP10 - 1, Japanese


• 遠隔モニタリング診療を受けている心臓デバイス(ICD、CRT-D)植込み患者の心理社会的特徴の検討

  小川 智美, 福沢 公二, 齊藤 奈緒, 谷岡 怜, 林 女久美, 木内 邦彦, 太田 雅也, 籠谷 圭造, 宮脇 郁子, 平田 健一

  (一社)日本循環器学会, Mar. 2019, 日本循環器学会学術集会抄録集, 83回, CP27 - 3, Japanese


• 心房細動患者における血中intermediate CD14++CD16+monocyteと心房電気的リモデリングとの相関関係(The Correlation between Circulating Intermediate CD14++CD16+Monocytes and Atrial Electrical Remodeling in Atrial Fibrillation Patients)

  末廣 英也, 福沢 公二, 木内 邦彦, 高見 充, 吉田 尚史, 黒瀬 潤, 秋田 朋己, 永松 裕一, 竹本 良, 坂井 淳, 中村 俊宏, 矢冨 敦亮, 山下 智也, 平田 健一

  (一社)日本循環器学会, Mar. 2019, 日本循環器学会学術集会抄録集, 83回, PJ113 - 7, English

  [Refereed]


• The limitations and potential adverse effects of the premature ventricular contraction response.

  Hiroki Konishi, Koji Fukuzawa, Shumpei Mori, Kunihiko Kiuchi, Ken-Ichi Hirata

  A 69-year-old man, who had undergone surgery for mitral and tricuspid regurgitation with the Maze procedure for paroxysmal atrial fibrillation, was admitted with an episode of syncope due to sick sinus syndrome. Three days after implantation of a dual-chamber pacemaker (Accent MRI™, St. Jude Medical Inc.,), ventricular pacing on T-wave was recorded multiple times. St. Jude Medical Inc. pacemakers have a unique additional algorithm, called premature ventricular contraction response, related to preventing pacemaker-mediated tachycardia. This algorithm was determined to be a cause of ventricular pacing on T-wave. We report the limitations and potential adverse effects of such automated algorithms.

  Oct. 2018, Journal of arrhythmia, 34(5) (5), 572 - 575, English, Domestic magazine

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Atypical inferoseptal accessory pathway connection associated with an aneurysm of the coronary sinus: Insight from a three-dimensional combined image of electroanatomic mapping and computed tomography.

  Makoto Nishimori, Kunihiko Kiuchi, Shumpei Mori, Jun Kurose, Yu Izawa, Shingo Kouno, Hiroaki Nakagawa, Shinsuke Shimoyama, Koji Fukuzawa, Ken-Ichi Hirata

  Sep. 2018, HeartRhythm case reports, 4(9) (9), 389 - 392, English, International magazine

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Serial observation of electrocardiographic responses to corticosteroid therapy in a patient with right ventricular-predominant cardiac sarcoidosis

  Hiroyuki Toh, Shumpei Mori, Marika Keno, Shun Yokota, Yuto Shinkura, Yu Izawa, Yuichi Nagamatsu, Shinsuke Shimoyama, Koji Fukuzawa, Tomofumi Doi, Ken-ichi Hirata

  Churchill Livingstone Inc., Jul. 2018, Journal of Electrocardiology, 51(4) (4), 658 - 662, English

  [Refereed]

  Scientific journal


• Anti-mitochondrial M2 Antibodies and Myopathy: Author's Reply.

  Hiroki Konishi, Koji Fukuzawa, Shumpei Mori, Seimi Satomi-Kobayashi, Kunihiko Kiuchi, Atsushi Suzuki, Tomomi Akita, Yoshihiko Yano, Akihiro Yoshida, Ken-Ichi Hirata

  Apr. 2018, Internal medicine (Tokyo, Japan), 57(8) (8), 1189 - 1189, English, Domestic magazine

  [Refereed]

  Scientific journal


• The lesion characteristics assessed by LGE-MRI after the cryoballoon ablation and conventional radiofrequency ablation.

  Jun Kurose, Kunihiko Kiuchi, Koji Fukuzawa, Shumpei Mori, Hirotoshi Ichibori, Hiroki Konishi, Yayoi Taniguchi, Kiyohiro Hyogo, Hiroshi Imada, Hideya Suehiro, Yu-Ichi Nagamatsu, Tomomi Akita, Makoto Takemoto, Ken-Ichi Hirata, Shinsuke Shimoyama, Yoshiaki Watanabe, Tatsuya Nishii, Noriyuki Negi, Katsusuke Kyotani

  Background: Rhythm outcomes after the pulmonary vein isolation (PVI) using the cryoballoon (CB) are reported to be excellent. However, the lesions after CB ablation have not been well discussed. We sought to characterize and compare the lesion formation after CB ablation with that after radiofrequency (RF) ablation. Methods: A total of 42 consecutive patients who underwent PVI were enrolled (29 in the CB group and 13 in the RF group). The PVI lesions were assessed by late gadolinium enhancement magnetic resonance imaging 1-3 months after the PVI. The region around the PVs was divided into eight segments: roof, anterior-superior, anterior-carina, anterior-inferior, bottom, posterior-inferior, posterior-carina, and posterior-superior segment. The lesion width and lesion gap in each segment were compared between the two groups. Lesion gaps were defined as no-enhancement sites of >4 mm. Results: As compared to the RF group, the overall lesion width was significantly wider and lesion gaps significantly fewer at the anterior-superior segment of the left PV (LAS) and anterior-inferior segment of the right PV (RAI) in the CB group (lesion width: 8.2 ± 2.2 mm vs 5.6 ± 2.0 mm, P = .001; lesion gap at LAS: 7% vs 38%, P = .02; lesion gap at RAI: 7% vs 46%, P = .006). Conclusions: The PVI lesions after CB ablation were characterized by extremely wider and more continuous lesions than those after RF ablation.

  Apr. 2018, Journal of arrhythmia, 34(2) (2), 158 - 166, English, Domestic magazine

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Experience managing pain associated with supraclavicular nerves compressed by a cardiac implantable electrical device, diagnosed by the local nerve block.

  Hiroshi Imada, Koji Fukuzawa, Kunihiko Kiuchi, Ken-Ichi Hirata, Hitoaki Sato

  A 72-year-old man with ischemic cardiomyopathy was referred to undergo an implantation of a cardiac implantable electrical device (CIED). A pocket was created subcutaneously on the left anterior chest. After the operation, he complained of severe pain irradiating to his left posterior shoulder. The local anesthetic nerve block by a local infusion of mepivacaine revealed the pain was associated with the supraclavicular nerve. We re-created the pocket and shifted the generator toward the inner side, and the irradiating pain vanished. A local anesthetic supraclavicular nerve block is an important option for the diagnosis of pain after a CIED implantation.

  Feb. 2018, Journal of arrhythmia, 34(1) (1), 84 - 86, English, Domestic magazine

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Feasibility of Imaging Inflammation in the Left Atrium Post AF Ablation Using PET Technology.

  Kunihiko Kiuchi, Koji Fukuzawa, Shumpei Mori, Yoshiaki Watanabe, Ken-Ichi Hirata

  Dec. 2017, JACC. Clinical electrophysiology, 3(12) (12), 1466 - 1467, English, International magazine

  [Refereed]

  Scientific journal


• The details of an unusual "ghost" after transvenous lead extraction: Three-dimensional computed tomography analysis.

  Kunihiko Kiuchi, Koji Fukuzawa, Shumpei Mori, Tatsuya Nishii, Kensuke Matsumoto, Hirotoshi Ichibori, Takashi Yamada

  Transvenous lead extraction (TLE) is performed to prevent deaths in patients with device infections. Intracardiac masses detected by echocardiography, i.e., "ghosts," are reported in 8% of patients after a TLE in retrospective studies and in 14% in prospective studies. We herein describe a case with unusual ghosts after a TLE. Three-dimensional computed tomography (3DCT) is useful for revealing all the details of unusual ghosts. In this case, the residual silicone insulation and "cast," including the fibrous sheath and severe calcifications could be visualized and differentiated by 3DCT.

  Dec. 2017, Journal of arrhythmia, 33(6) (6), 640 - 642, English, Domestic magazine

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Extracardiac compression of the inferolateral branch of the coronary vein by the descending aorta in a patient with dilated cardiomyopathy

  Hiroki Konishi, Shumpei Mori, Tatsuya Nishii, Yu Izawa, Naoki Tamada, Hidekazu Tanaka, Kunihiko Kiuchi, Koji Fukuzawa, Ken-ichi Hirata

  Elsevier B.V., Dec. 2017, Journal of Arrhythmia, 33(6) (6), 646 - 648, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Risk Stratification of Future Left Ventricular Dysfunction for Patients with Indications for Right Ventricular Pacing due to Bradycardia.

  Junichi Ooka, Hidekazu Tanaka, Yutaka Hatani, Keiko Hatazawa, Hiroki Matsuzoe, Hiroyuki Shimoura, Hiroyuki Sano, Takuma Sawa, Yoshiki Motoji, Yasuhide Mochizuki, Keiko Ryo-Koriyama, Kensuke Matsumoto, Koji Fukuzawa, Ken-Ichi Hirata

  Although right ventricular (RV) pacing is the only effective treatment for patients with symptomatic bradycardia, it creates left ventricular (LV) dyssynchrony, which can induce LV dysfunction and heart failure. The current criterion for consideration of cardiac resynchronization therapy (CRT) is LV ejection fraction (LVEF) ≤ 35%, but indication for CRT in patients required for RV pacing with LVEF > 35% remains unclear.We studied 40 patients, all LVEF ≥ 35%, who had undergone implantable cardioverter-defibrillator implantation with RV pacing < 5%. Echocardiography was performed at baseline and during RV pacing. LV dyssynchrony was defined as anteroseptal-to-posterior wall delay from the mid-LV short-axis view using two-dimensional speckle-tracking radial strain (significant: ≥ 130 ms). Patients were divided into two groups based on baseline LVEF: normal LVEF ( ≥ 50%; n = 20) and mildly reduced LVEF (35-50%; n = 20).LVEF and LV dyssynchrony in patients with mildly reduced LVEF deteriorated significantly during RV pacing compared to those in patients with normal LVEF. Moreover, changes in LV dyssynchrony during RV pacing significantly correlated with changes in LVEF (r = -0.44, P < 0.01). Multivariate logistic regression analysis showed that baseline LVEF was the only independent predictor and baseline LVEF < 48% predictive of significant LV dyssynchrony during RV pacing.The extent of RV pacing-induced LV dysfunction may be associated with baseline LV function. These adverse effects on patients with mildly reduced LVEF of 35-50% and indications for RV pacing due to bradycardia can thus be prevented by CRT.

  Oct. 2017, International heart journal, 58(5) (5), 724 - 730, English, Domestic magazine

  [Refereed]

  Scientific journal


• Monocyte-to-HDL-cholesterol ratio and left atrial remodelling in atrial fibrillation: Author's reply

  Atsushi Suzuki, Koji Fukuzawa, Tomoya Yamashita, Naoto Sasaki, Ken-Ichi Hirata

  Oxford University Press, Aug. 2017, Europace, 19(8) (8), 1409 - 1410, English

  [Refereed]

  Scientific journal


• Follow-up of Cardiac Fabry Disease Treated by Cardiac Resynchronization Therapy.

  Yuko Fukuda, Tetsuari Onishi, Atsushi Suzuki, Hidekazu Tanaka, Koji Fukuzawa, Akihiro Yoshida, Hiroya Kawai, Ken-Ichi Hirata

  Aug. 2017, CASE (Philadelphia, Pa.), 1(4) (4), 134 - 137, English, International magazine

  [Refereed]

  Scientific journal


• Isolated Fourth Heart Sound

  Shun Yokota, Shumpei Mori, Fumiaki Kanazawa, Hiroyuki Toh, Yuto Shinkura, Yasuna Takuma, Hiroshi Imada, Koji Fukuzawa, Ken-ichi Hirata

  Aug. 2017, CIRCULATION-HEART FAILURE, 10(8) (8), English

  [Refereed]

  Scientific journal


• Optimal image reconstruction using multidetector-row computed tomography to facilitate cardiac resynchronization therapy

  Yu Izawa, Shumpei Mori, Tatsuya Nishii, Hiroki Matsuzoe, Hiroshi Imada, Hideya Suehiro, Kazuhiko Nakayama, Kensuke Matsumoto, Hidekazu Tanaka, Sei Fujiwara, Koji Fukuzawa, Ken-ichi Hirata

  Jul. 2017, ECHOCARDIOGRAPHY-A JOURNAL OF CARDIOVASCULAR ULTRASOUND AND ALLIED TECHNIQUES, 34(7) (7), 1073 - 1076, English

  [Refereed]

  Scientific journal


• Anatomical dilatation of the superior vena cava associated with an arrhythmogenic response induced by SVC scan pacing after atrial fibrillation ablation

  Hiroshi Imada, Koji Fukuzawa, Kunihiko Kiuchi, Akinori Matsumoto, Hiroki Konishi, Hirotoshi Ichibori, Kiyohiro Hyogo, Jun Kurose, Shumpei Mori, Tomofumi Takaya, Tatsuya Nishii, Kiyosumi Kagawa, Akihiro Yoshida, Hirata Ken-ichi

  Elsevier B.V., Jun. 2017, Journal of Arrhythmia, 33(3) (3), 177 - 184, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Percutaneous Pericardiocentesis for Epicardial Ventricular Tachycardia Ablation With the Anterior Approach Not Passing Through the Abdominal Cavity.

  Koji Fukuzawa, Shumpei Mori, Kunihiko Kiuchi, Tatsuya Nishii, Ken-Ichi Hirata

  May 2017, JACC. Clinical electrophysiology, 3(5) (5), 526 - 527, English, International magazine

  [Refereed]

  Scientific journal


• The inferior displacement of the His bundle and fast pathway in a patient with common type atrioventricular nodal tachycardia: Three-dimensional computed tomography analysis

  Kunihiko Kiuchi, Koji Fukuzawa, Mori Shumpei, Tatsuya Nishii

  Elsevier B.V., Apr. 2017, Journal of Arrhythmia, 33(2) (2), 147 - 149, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Predictors and Clinical Outcomes of Transient Responders to Cardiac Resynchronization Therapy

  Hirotoshi Ichibori, Koji Fukuzawa, Kunihiko Kiuchi, Akinori Matsumoto, Hiroki Konishi, Hiroshi Imada, Kiyohiro Hyogo, Jun Kurose, Kazuhiro Tatsumi, Hidekazu Tanaka, Ken-Ichi Hirata

  Mar. 2017, PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY, 40(3) (3), 301 - 309, English

  [Refereed]

  Scientific journal


• Circulating intermediate CD1411CD161 monocytes are increased in patients with atrial fibrillation and reflect the functional remodelling of the left atrium

  Atsushi Suzuki, Koji Fukuzawa, Tomoya Yamashita, Akihiro Yoshida, Naoto Sasaki, Takuo Emoto, Asumi Takei, Ryudo Fujiwara, Tomoyuki Nakanishi, Soichiro Yamashita, Akinori Matsumoto, Hiroki Konishi, Hirotoshi Ichibori, Ken-Ichi Hirata

  Oxford University Press, 2017, Europace, 19(1) (1), 40 - 47, English

  [Refereed]

  Scientific journal


• Anti-mitochondrial M2 Antibodies Enhance the Risk of Supraventricular Arrhythmias in Patients with Elevated Hepatobiliary Enzyme Levels

  Hiroki Konishi, Koji Fukuzawa, Shumpei Mori, Seimi Satomi-Kobayashi, Kunihiko Kiuchi, Atsushi Suzuki, Yoshihiko Yano, Akihiro Yoshida, Ken-ichi Hirata

  2017, INTERNAL MEDICINE, 56(14) (14), 1771 - 1779, English

  [Refereed]

  Scientific journal


• Homogenous and Continuous Lesion Formation With Cryoballoon Ablation: Delayed-Enhancement Magnetic Resonance Imaging Analysis

  Kunihiko Kiuchi, Koji Fukuzawa, Tomofumi Takaya, Tatsuya Nishii

  Oct. 2016, JOURNAL OF CARDIOVASCULAR ELECTROPHYSIOLOGY, 27(10) (10), 1234 - 1235, English

  [Refereed]

  Scientific journal


• Characteristics of Residual Atrial Posterior Wall and Roof-Dependent Atrial Tachycardias after Pulmonary Vein Isolation

  Akinori Matsumoto, Koji Fukuzawa, Kunihiko Kiuchi, Hiroki Konishi, Hirotoshi Ichibori, Hiroshi Imada, Kiyohiro Hyogo, Jun Kurose, Tomofumi Takaya, Shumpei Mori, Akihiro Yoshida, Ken-ichi Hirata, Tatsuya Nishii, Atsushi Kono

  Oct. 2016, PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY, 39(10) (10), 1090 - 1098, English

  [Refereed]

  Scientific journal


• Slit-Like Deformation of the Coronary Sinus Orifice due to Compression of the Inferior Pyramidal Space by the Severely Dilated Left Ventricle

  Hirotoshi Ichibori, Shumpei Mori, Tomofumi Takaya, Kunihiro Kiuchi, Tatsuro Ito, Sei Fujiwara, Koji Fukuzawa, Kazuhiro Tatsumi, Hidekazu Tanaka, Tatsuya Nishii, Atsushi K. Kono, Ken-Ichi Hirata

  Sep. 2016, PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY, 39(9) (9), 1026 - 1029, English

  [Refereed]

  Scientific journal


• Eccentric scar formation around a pulmonary vein after cryo-balloon ablation in a patient with atrial fibrillation: A case report

  Kunihiko Kiuchi, Koji Fukuzawa, Akinori Matsumoto

  Elsevier, Jun. 2016, Journal of Arrhythmia, 32(3) (3), 230 - 232, English

  [Refereed]

  Scientific journal


• Clinical cardiac structural anatomy reconstructed within the cardiac contour using multidetector-row computed tomography: Atrial septum and ventricular septum

  Shumpei Mori, Koji Fukuzawa, Tomofumi Takaya, Sachiko Takamine, Tatsuro Ito, Sei Fujiwara, Tatsuya Nishii, Atsushi K Kono, Akihiro Yoshida, Ken-Ichi Hirata

  John Wiley and Sons Inc., Apr. 2016, Clinical Anatomy, 29(3) (3), 342 - 352, English

  [Refereed]

  Scientific journal


• Clinical cardiac structural anatomy reconstructed within the cardiac contour using multidetector-row computed tomography: The arrangement and location of the cardiac valves

  Shumpei Mori, Koji Fukuzawa, Tomofumi Takaya, Sachiko Takamine, Tatsuro Ito, Sei Fujiwara, Tatsuya Nishii, Atsushi K. Kono, Akihiro Yoshida, Ken-Ichi Hirata

  John Wiley and Sons Inc., Apr. 2016, Clinical Anatomy, 29(3) (3), 364 - 370, English

  [Refereed]

  Scientific journal


• Clinical cardiac structural anatomy reconstructed within the cardiac contour using multidetector-row computed tomography: Left ventricular outflow tract

  Shumpei Mori, Koji Fukuzawa, Tomofumi Takaya, Sachiko Takamine, Tatsuro Ito, Sei Fujiwara, Tatsuya Nishii, Atsushi K Kono, Akihiro Yoshida, Ken-Ichi Hirata

  John Wiley and Sons Inc., Apr. 2016, Clinical Anatomy, 29(3) (3), 353 - 363, English

  [Refereed]

  Scientific journal


• Left ventricular dyssynergy and dispersion as determinant factors of fatal ventricular arrhythmias in patients with mildly reduced ejection fraction

  Hiroki Matsuzoe, Hidekazu Tanaka, Kensuke Matsumoto, Hiromi Toki, Hiroyuki Shimoura, Junichi Ooka, Hiroyuki Sano, Takuma Sawa, Yoshiki Motoji, Yasuhide Mochizuki, Keiko Ryo, Koji Fukuzawa, Akihiro Yoshida, Ken-ichi Hirata

  Mar. 2016, EUROPEAN HEART JOURNAL-CARDIOVASCULAR IMAGING, 17(3) (3), 334 - 342, English

  [Refereed]

  Scientific journal


• Impact of esophageal temperature monitoring guided atrial fibrillation ablation on preventing asymptomatic excessive transmural injury

  Kunihiko Kiuchi, Katsunori Okajima, Akira Shimane, Gaku Kanda, Kiminobu Yokoi, Jin Teranishi, Kousuke Aoki, Misato Chimura, Takayoshi Toba, Shogo Oishi, Takahiro Sawada, Yasue Tsukishiro, Tetsuari Onishi, Seiichi Kobayashi, Yasuyo Taniguchi, Shinichiro Yamada, Yoshinori Yasaka, Hiroya Kawai, Akihiro Yoshida, Koji Fukuzawa, Mitsuaki Itoh, Kimitake Imamura, Ryudo Fujiwara, Atsushi Suzuki, Tomoyuki Nakanishi, Soichiro Yamashita, Ken-Ichi Hirata, Hiroshi Tada, Hiro Yamasaki, Yoshihisa Naruse, Miyako Igarashi, Kazutaka Aonuma

  Elsevier, Feb. 2016, Journal of Arrhythmia, 32(1) (1), 36 - 41, English

  [Refereed]

  Scientific journal


• The effectiveness of cardiac resynchronization therapy for patients with New York Heart Association class IV non-ambulatory heart failure

  Soichiro Yamashita, Koji Fukuzawa, Akihiro Yoshida, Mitsuaki Itoh, Kimitake Imamura, Ryudo Fujiwara, Atsushi Suzuki, Tomoyuki Nakanishi, Akinori Matsumoto, Gaku Kanda, Kunihiko Kiuchi, Akira Shimane, Katsunori Okajima, Hidekazu Tanaka, Ken-Ichi Hirata

  Elsevier B.V., Aug. 2015, Journal of Arrhythmia, 31(4) (4), 221 - 225, English

  [Refereed]

  Scientific journal


• Reduction in coronary microvascular resistance through cardiac resynchronization and its impact on chronic reverse remodelling of left ventricle in patients with non-ischaemic cardiomyopathy

  Mitsuaki Itoh, Toshiro Shinke, Akihiro Yoshida, Amane Kozuki, Asumi Takei, Koji Fukuzawa, Kunihiko Kiuchi, Kimitake Imamura, Ryudo Fujiwara, Atsushi Suzuki, Tomoyuki Nakanishi, Soichiro Yamashita, Akinori Matsumoto, Hiromasa Otake, Ryoji Nagoshi, Junya Shite, Ken-Ichi Hirata

  Oxford University Press, Jul. 2015, Europace, 17(9) (9), 1407 - 1414, English

  [Refereed]

  Scientific journal


• The Relationship Between Cardiac Vulnerability and Restitution Properties of the Ventricular Activation Recovery Interval

  Soichiro Yamashita, Akihiro Yoshida, Koji Fukuzawa, Tomoyuki Nakanishi, Akinori Matsumoto, Hiroki Konishi, Hirotoshi Ichibori, Kiyohiro Hyogo, Hiroshi Imada, Ken-Ichi Hirata

  Jul. 2015, JOURNAL OF CARDIOVASCULAR ELECTROPHYSIOLOGY, 26(7) (7), 768 - 773, English

  [Refereed]

  Scientific journal


• Clinical Structural Anatomy of the Inferior Pyramidal Space Reconstructed Within the Cardiac Contour Using Multidetector-Row Computed Tomography

  Shumpei Mori, Koji Fukuzawa, Tomofumi Takaya, Sachiko Takamine, Tatsuro Ito, Sei Fujiwara, Tatsuya Nishii, Atsushi K. Kono, Akihiro Yoshida, Ken-Ichi Hirata

  Jul. 2015, JOURNAL OF CARDIOVASCULAR ELECTROPHYSIOLOGY, 26(7) (7), 705 - 712, English

  [Refereed]

  Scientific journal


• Prophylactic catheter ablation of ventricular tachycardia before cardioverter-defibrillator implantation in patients with non-ischemic cardiomyopathy: Clinical outcomes after a single endocardial ablation

  Atsushi Suzuki, Akihiro Yoshida, Asumi Takei, Koji Fukuzawa, Kunihiko Kiuchi, Kaoru Takami, Mitsuaki Itoh, Kimitake Imamura, Ryudo Fujiwara, Tomoyuki Nakanishi, Soichiro Yamashita, Akinori Matsumoto, Akira Shimane, Katsunori Okajima, Ken-Ichi Hirata

  Elsevier, Jun. 2015, Journal of Arrhythmia, 31(3) (3), 122 - 129, English

  [Refereed]

  Scientific journal


• Crista terminalis as the anterior pathway of typical atrial flutter: Insights from entrainment map with 3D intracardiac ultrasound

  Tomoyuki Nakanishi, Koji Fukuzawa, Akihiro Yoshida, Mitsuaki Itoh, Kimitake Imamura, Ryudo Fujiwara, Atsushi Suzuki, Soichiro Yamashita, Akinori Matsumoto, Hiroki Konishi, Hirotoshi Ichibori, Ken-Ichi Hirata

  Blackwell Publishing Inc., May 2015, PACE - Pacing and Clinical Electrophysiology, 38(5) (5), 608 - 616, English

  [Refereed]

  Scientific journal


• Optimal Angulations for Obtaining an En Face View of Each Coronary Aortic Sinus and the Interventricular Septum: Correlative Anatomy Around the Left Ventricular Outflow Tract

  Shumpei Mori, Koji Fukuzawa, Tomofumi Takaya, Sachiko Takamine, Tatsuro Ito, Mitsuo Kinugasa, Mayumi Shigeru, Sei Fujiwara, Tatsuya Nishii, Atsushi K. Kono, Akihiro Yoshida, Ken-Ichi Hirata

  May 2015, CLINICAL ANATOMY, 28(4) (4), 494 - 505, English

  [Refereed]

  Scientific journal


• 駆出率が軽度低下した患者における致死的心室性不整脈の決定因子としての左室協調運動障害と分散(Left Ventricular Dyssynergy and Dispersion as Determinant Factors of Fatal Ventricular Arrhythmias in Patients with Mild Reduced Ejection Fraction)

  Matsuzoe Hiroki, Tanaka Hidekazu, Matsumoto Kensuke, Dokuni Kumiko, Hatani Yutaka, Hatazawa Keiko, Toki Hiromi, Shimoura Hiroyuki, Ooka Junichi, Sano Hiroyuki, Sawa Takuma, Motoji Yoshiki, Mochizuki Yasuhide, Ryo Keiko, Fukuzawa Koji, Yoshida Akihiro, Hirata Ken-ichi

  (一社)日本循環器学会, Mar. 2015, Circulation Journal, 79(Suppl.I) (Suppl.I), 2942 - 2942, English


• Topographic variability of the left atrium and pulmonary veins assessed by 3D-CT predicts the recurrence of atrial fibrillation after catheter ablation

  Kunihiko Kiuchi, Akihiro Yoshida, Asumi Takei, Koji Fukuzawa, Mitsuaki Itoh, Kimitake Imamura, Ryudo Fujiwara, Atsushi Suzuki, Tomoyuki Nakanishi, Soichiro Yamashita, Ken-Ichi Hirata, Gaku Kanda, Katsunori Okajima, Akira Shimane, Shinichiro Yamada, Yasuyo Taniguchi, Yoshinori Yasaka, Hiroya Kawai

  Elsevier, 2015, Journal of Arrhythmia, 31(5) (5), 286 - 292, English

  [Refereed]

  Scientific journal


• Anatomical consideration for safe pericardiocentesis assessed by three-dimensional computed tomography: Should an anterior or posterior approach be used?

  Jin Teranishi, Katsunori Okajima, Kunihiko Kiuchi, Akira Shimane, Koji Fukuzawa, Gaku Kanda, Kiminobu Yokoi, Shinichiro Yamada, Yasuyo Taniguchi, Yoshinori Yasaka, Hiroya Kawai

  Elsevier, Dec. 2014, Journal of Arrhythmia, 30(6) (6), 491 - 495, English

  [Refereed]

  Scientific journal


• Upper Limit of Vulnerability During Defibrillator Implantations Predicts the Occurrence of Appropriate Shock Therapy for Ventricular Fibrillation

  Soichiro Yamashita, Akihiro Yoshida, Koji Fukuzawa, Ryudo Fujiwara, Atsushi Suzuki, Tomoyuki Nakanishi, Akinori Matsumoto, Hiroki Konishi, Hirotoshi Ichibori, Ken-ichi Hirata

  Jul. 2014, CIRCULATION JOURNAL, 78(7) (7), 1606 - 1611, English

  [Refereed]

  Scientific journal


• Visualization of the Antegrade Fast and Slow Pathway Inputs in Patients with Slow-Fast Atrioventricular Nodal Reentrant Tachycardia

  Atsushi Suzuki, Akihiro Yoshida, Asumi Takei, Koji Fukuzawa, Kunihiko Kiuchi, Satoko Tanaka, Mitsuaki Itoh, Kimitake Imamura, Ryudo Fujiwara, Tomoyuki Nakanishi, Soichiro Yamashita, Akinori Matsumoto, Hiroki Konishi, Hirotoshi Ichibori, Ken-Ichi Hirata

  Jul. 2014, PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY, 37(7) (7), 874 - 883, English

  [Refereed]

  Scientific journal


• Discrepancy between Electrical and Mechanical Dyssynchrony in Patients with Heart Failure and an Electrical Disturbance

  Ryudo Fujiwara, Akihiro Yoshida, Koji Fukuzawa, Asumi Takei, Kunihiko Kiuchi, Mitsuaki Itoh, Kimitake Imamura, Atsushi Suzuki, Tomoyuki Nakanishi, Soichiro Yamashita, Akinori Matsumoto, Hidekazu Tanaka, Ken-Ichi Hirata

  May 2014, PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY, 37(5) (5), 576 - 584, English

  [Refereed]

  Scientific journal


• Time-dependent effect of cardiac resynchronization therapy on ventricular repolarization and ventricular arrhythmias

  Mitsuaki Itoh, Akihiro Yoshida, Koji Fukuzawa, Kunihiko Kiuchi, Kimitake Imamura, Ryudo Fujiwara, Atsushi Suzuki, Tomoyuki Nakanishi, Soichiro Yamashita, Akinori Matsumoto, Ken-ichi Hirata

  Dec. 2013, EUROPACE, 15(12) (12), 1798 - 1804, English

  [Refereed]

  Scientific journal


• Optimal Strength and Number of Shocks at Upper Limit of Vulnerability Testing Required to Predict High Defibrillation Threshold Without Inducing Ventricular Fibrillation

  Kaoru Takami, Akihiro Yoshida, Koji Fukuzawa, Asumi Takei, Kunihiko Kiuchi, Gaku Kanda, Hiroyuki Kumagai, Mitsuru Takami, Satoko Toni-Tanaka, Mitsuaki Itoh, Kimitake Imamura, Ryudo Fujiwara, Atsushi Suzuki, Tomoyuki Nakanishi, Soichiro Yamashita, Akinori Matsumoto, Ken-ichi Hirata

  Oct. 2013, CIRCULATION JOURNAL, 77(10) (10), 2490 - 2496, English

  [Refereed]

  Scientific journal


• Dabigatran in the peri-procedural period for radiofrequency ablation of atrial fibrillation: efficacy, safety, and impact on duration of hospital stay

  Kimitake Imamura, Akihiro Yoshida, Asumi Takei, Koji Fukuzawa, Kunihiko Kiuchi, Kaoru Takami, Mitsuru Takami, Mitsuaki Itoh, Ryudo Fujiwara, Atsushi Suzuki, Tomoyuki Nakanishi, Soichiro Yamashita, Akinori Matsumoto, Ken-ichi Hirata

  Sep. 2013, JOURNAL OF INTERVENTIONAL CARDIAC ELECTROPHYSIOLOGY, 37(3) (3), 223 - 231, English

  [Refereed]

  Scientific journal


• 植込み型除細動器のショック作動と予後に関する検討

  嶋根 章, 岡嶋 克則, 福沢 公二, 觀田 学, 横井 公宣, 寺西 仁, 青木 恒介, 千村 美里, 小林 征一, 高谷 具史, 月城 泰栄, 三好 直貴, 山田 愼一郎, 谷口 泰代, 矢坂 義則, 林 孝俊, 大石 醒悟, 鳥羽 敬義, 高橋 八大, 宮田 大嗣, 斎田 天, 津端 英雄, 横山 光宏

  (一社)日本不整脈心電学会, Sep. 2012, 心電図, 32(Suppl.5) (Suppl.5), S - 152, Japanese


• Rate-Dependent and Site-Specific Conduction Block at the Posterior Right Atrium and Drug Effects Evaluated Using a Noncontact Mapping System in Patients with Typical Atrial Flutter

  Mitsuru Takami, Akihiro Yoshida, Koji Fukuzawa, Asumi Takei, Gaku Kanda, Kaoru Takami, Hiroyuki Kumagai, Satoko Tanaka, Mitsuaki Itoh, Kimitake Imamura, Ryudo Fujiwara, Atsushi Suzuki, Ken-Ichi Hirata

  Aug. 2012, JOURNAL OF CARDIOVASCULAR ELECTROPHYSIOLOGY, 23(8) (8), 827 - 834, English

  [Refereed]

  Scientific journal


• 持続性心房細動へのアブレーションは有益か 持続性心房細動に対する高周波デバイスを用いたModified Maze手術の治療成績と再発例に対するカテーテルアブレーションのhybrid therapyの有用性

  岡嶋 克則, 嶋根 章, 福沢 公二, 觀田 学, 横井 公宣, 寺西 仁, 青木 恒介, 千村 美里, 林 孝俊, 谷口 泰代, 矢坂 義則, 山田 愼一郎, 小林 征一, 高谷 具史, 月城 泰栄, 三好 直貴, 横山 光宏, 吉田 正人, 中桐 啓太郎, 向原 伸彦

  (一社)日本不整脈心電学会, May 2012, Journal of Arrhythmia, 28(Suppl.) (Suppl.), 152 - 152, Japanese


• 植込み型除細動器(ICD)植込み時に、除細動閾値(DFT)テストは必要か?

  千村 美里, 岡嶋 克則, 嶋根 章, 福沢 公二, 横井 公宣, 觀田 学, 寺西 仁, 青木 恒介, 林 孝俊, 矢坂 義則, 谷口 泰代, 山田 愼一郎, 高谷 具史, 月城 泰栄, 三好 直貴, 大石 醒悟, 鳥羽 敬義, 小林 征一, 横山 光宏

  (一社)日本不整脈心電学会, May 2012, Journal of Arrhythmia, 28(Suppl.) (Suppl.), 165 - 165, Japanese


• 器質的心疾患を有する植込み型除細動器植込み例における電気的ストームの検討

  嶋根 章, 岡嶋 克則, 福沢 公二, 觀田 学, 横井 公宣, 寺西 仁, 青木 恒介, 千村 美里, 林 孝俊, 矢坂 義則, 谷口 泰代, 山田 愼一郎, 小林 征一, 高谷 具史, 月城 泰栄, 三好 直貴, 大石 醒悟, 鳥羽 敬義, 高橋 八大, 横山 光宏

  (一社)日本不整脈心電学会, May 2012, Journal of Arrhythmia, 28(Suppl.) (Suppl.), 277 - 277, Japanese


• 電気的ストームに対し緊急カテーテルアブレーションの有効性の検討

  青木 恒介, 岡嶋 克則, 嶋根 章, 福沢 公二, 觀田 学, 横井 公宣, 寺西 仁, 千村 美里, 林 孝俊, 矢坂 義則, 谷口 泰代, 山田 愼一郎, 小林 征一, 高谷 具史, 月城 泰栄, 三好 直貴, 大石 醒悟, 鳥羽 敬義, 横山 光宏

  (一社)日本不整脈心電学会, May 2012, Journal of Arrhythmia, 28(Suppl.) (Suppl.), 278 - 278, Japanese


• 3D-CTを用いた、心外膜穿刺法の解剖学的考察

  寺西 仁, 岡嶋 克則, 嶋根 章, 福沢 公二, 觀田 学, 横井 公宣, 青木 恒介, 千村 美里, 林 孝俊, 矢坂 義則, 谷口 泰代, 山田 愼一郎, 小林 征一, 高谷 具史, 月城 泰栄, 三好 直貴, 大石 醒悟, 鳥羽 敬義, 横山 光宏

  (一社)日本不整脈心電学会, May 2012, Journal of Arrhythmia, 28(Suppl.) (Suppl.), 282 - 282, Japanese


• 右心耳に留置したストレート型スクリューインリードBoston4469 FINELINE2 SteroxEZの初期治療成績

  横井 公宣, 岡嶋 克則, 千村 美里, 青木 恒介, 鳥羽 敬義, 寺西 仁, 觀田 学, 福沢 公二, 嶋根 章, 斎田 天, 高橋 八大, 大石 醒悟, 三好 直貴, 高谷 具史, 小林 征一, 山田 愼一郎, 谷口 泰代, 矢坂 義則, 林 孝俊, 横山 光宏

  (一社)日本不整脈心電学会, May 2012, Journal of Arrhythmia, 28(Suppl.) (Suppl.), 385 - 385, Japanese


• "Heparin bridging" increases the risk of bleeding complications in patients undergoing anticoagulation therapy and device implantation

  Ryudo Fujiwara, Akihiro Yoshida, Asumi Takei, Koji Fukuzawa, Kaoru Takami, Mitsuru Takami, Satoko Tanaka, Mitsuaki Ito, Kimitake Imamura, Ken-Ichi Hirata

  Elsevier B.V., 2012, Journal of Arrhythmia, 28(2) (2), 96 - 99, English

  [Refereed]

  Scientific journal


• Utility of virtual unipolar electrogram morphologies to detect transverse conduction block and turnaround points of typical atrial flutter

  Mitsuru Takami, Akihiro Yoshida, Koji Fukuzawa, Asumi Takei, Gaku Kanda, Kaoru Takami, Hiroyuki Kumagai, Satoko Tanaka, Mitsuaki Itoh, Kimitake Imamura, Ryudo Fujiwara, Atsushi Suzuki, Ken-ichi Hirata

  Nov. 2011, JOURNAL OF INTERVENTIONAL CARDIAC ELECTROPHYSIOLOGY, 32(2) (2), 111 - 119, English

  [Refereed]

  Scientific journal


• Recognition of inferiorly dislocated fast pathways guided by three-dimensional electro-anatomical mapping

  Satoko Tanaka, Akihiro Yoshida, Koji Fukuzawa, Asumi Takei, Gaku Kanda, Kaoru Takami, Hiroyuki Kumagai, Mitsuru Takami, Mitsuaki Itoh, Kimitake Imamura, Ryudo Fujiwara, Ken-ichi Hirata

  Nov. 2011, JOURNAL OF INTERVENTIONAL CARDIAC ELECTROPHYSIOLOGY, 32(2) (2), 95 - 103, English

  [Refereed]

  Scientific journal


• 非虚血性心筋症患者において心臓再同期療法が冠血流および微小血管抵抗に及ぼす作用(Effect of Cardiac Resynchronization Therapy on Coronary Flow and Microvascular Resistance in Patients with Non-ischemic Cardiomyopathy)

  Itoh Mitsuaki, Shinke Toshiro, Yoshida Akihiro, Kohzuki Amane, Takei Asumi, Fukuzawa Koji, Takami Kaoru, Kumagai Hiroyuki, Tanaka Satoko, Takami Mitsuru, Imamura Kimitake, Fujiwara Ryudo, Suzuki Atsushi, Hirata Kenichi

  (一社)日本循環器学会, Mar. 2011, Circulation Journal, 75(Suppl.I) (Suppl.I), 2 - 3, English


• 心臓再同期療法開始から6ヵ月後における冠血流予備能と心エコー図上の反応との関連性(Relationship between Coronary Flow Reserve and Echocardiac Response after 6-month of Cardiac Resynchronization Therapy)

  Itoh Mitsuaki, Yoshida Akihiro, Shinke Toshiro, Kohzuki Amane, Takei Asumi, Fukuzawa Koji, Takami Kaoru, Kumagai Hiroyuki, Tanaka Satoko, Takami Mitsuru, Imamura Kimitake, Fujiwara Ryudo, Suzuki Atsushi, Hirata Kenichi

  (一社)日本循環器学会, Mar. 2011, Circulation Journal, 75(Suppl.I) (Suppl.I), 3 - 3, English


• 非虚血性心筋症患者において心臓再同期療法が冠動脈血流相パターンに及ぼす作用(Effect of Cardiac Resynchronization Therapy on Phasic Coronary Flow Pattern in Patients with Non-ischemic Cardiomyopathy)

  Itoh Mitsuaki, Shinke Toshiro, Yoshida Akihiro, Kohzuki Amane, Takei Asumi, Fukuzawa Koji, Takami Kaoru, Kumagai Hiroyuki, Tanaka Satoko, Takami Mitsuru, Imamura Kimitake, Fujiwara Ryudo, Suzuki Atsushi, Hirata Kenichi

  (一社)日本循環器学会, Mar. 2011, Circulation Journal, 75(Suppl.I) (Suppl.I), 10 - 10, English


• 不明熱を契機に心室細動発作を繰り返し，著明な伝導障害を伴うＢｒｕｇａｄａ症候群と考えられた１例

  高見 充, 吉田 明弘, 武居 明日美, 福沢 公二, 高見 薫, 田中 聡子, 伊藤 光哲, 今村 公威, 藤原 竜童, 鈴木 敦, 平田 健一

  症例は濃厚な突然死家族歴を有する71歳男性．発熱ならびに植込み型除細動器（ICD）作動で緊急入院となった．中学生の頃から脚ブロックを指摘され，54歳時に失神歴あり，64歳時に心室細動（VF）から心肺停止となり蘇生された．安静時12誘導心電図では完全右脚ブロック（QRS幅170msec, V₁, V₂にノッチあり）を認め，加算平均心電図では遅延電位陽性であった．心エコー，心筋シンチグラフィー，心臓MRI，心筋生検では特記すべき異常を認めなかったが，ピルジカイニド負荷にてV₂にcoved型の心電図変化を認め，Brugada症候群または不整脈源性右室心筋症初期の可能性を考えICD植込みを行った．その後6年間状態は安定していたが，平成21年9月頃より発熱を契機に肝酵素上昇，VF発作を認め緊急入院となった．肝酵素，炎症反応上昇認めるものの，各種検査でも熱源不明であり，高熱時にVF発作を認め不整脈コントロールに難渋した．VFの原因となった基礎心疾患の診断や，発熱時のVFへの対応なども含め興味深い1例と考えられたため報告する．

  The Japanese Society of Electrocardiology, 2011, 心電図, 31(4) (4), 417 - 423, Japanese


• Incidence, Clinical Characteristics and Prognosis of Left Bundle Branch Block Induced Cardiomyopathy in Patients with Idiopathic Dilated Cardiomyopathy after Cardiac Resynchronization Therapy

  Katsunori Okajima, Akira Shimane, Koji Fukuzawa, Gaku Kanda, Kiminobu Yokoi, Jin Teranishi, Kosuke Aoki, Takatoshi Hayashi, Mitsuhiro Yokoyama

  2011, journal of arrhythmia, 27(4) (4), 267, English

  [Refereed]

  Scientific journal


• Long-Term Follow Up of DDD - Right Ventricular Apex Pacing for Sick Sinus Syndrome and Atrioventricular Block

  Kiminobu Yokoi, Katsunori Okajima, Akira Shimane, Koji Fukuzawa, Gaku Kanda, Jin Teranishi, Takatoshi Hayashi, Mitsuhiro Yokoyama

  2011, journal of arrhythmia, 27, 188, English

  [Refereed]

  Scientific journal


• 不明熱を契機に心室細動発作を繰り返した心臓伝導障害とBrugada症候群の合併と考えられた1例

  高見 充, 吉田 明弘, 武居 明日美, 福沢 公二, 高見 薫, 田中 聡子, 伊藤 光哲, 今村 公威, 藤原 竜童, 鈴木 敦, 平田 健一

  (一社)日本不整脈心電学会, Sep. 2010, 心電図, 30(Suppl.4) (Suppl.4), S - 202, Japanese


• 心房細動の合併の有無による通常型心房粗動患者の右房後方ブロックラインの機能的変化の特徴

  高見 充, 吉田 明弘, 武居 明日美, 福沢 公二, 高見 薫, 田中 聡子, 伊藤 光哲, 今村 公威, 松本 竜童, 平田 健一

  (一社)日本不整脈心電学会, Apr. 2010, Journal of Arrhythmia, 26(Suppl.) (Suppl.), 225 - 225, Japanese


• 心臓再同期療法における冠循環動態と心筋微小血管抵抗の急性効果の検討

  伊藤 光哲, 吉田 明弘, 武居 明日美, 福沢 公二, 高見 薫, 熊谷 寛之, 田中 聡子, 高見 充, 今村 公威, 松本 竜童, 平田 健一

  (一社)日本不整脈心電学会, Apr. 2010, Journal of Arrhythmia, 26(Suppl.) (Suppl.), 281 - 281, Japanese


• 心臓再同期療法中の患者における心室再分極の時間依存性変化(Time-dependent Change of Ventricular Repolarization in Patients with Cardiac Resynchronization Therapy: Using Beat-to-Beat QT Dispersion)

  Itoh Mitsuaki, Yoshida Akihiro, Fukuzawa Koji, Takami Kaoru, Tanaka Satoko, Takami Mitsuru, Imamura Kimitake, Matsumoto Ryudo, Hirata Kenichi

  (一社)日本循環器学会, Mar. 2010, Circulation Journal, 74(Suppl.I) (Suppl.I), 261 - 261, English


• 植込み型除細動器を装着した患者における抗頻拍ペーシングの効果に対する心室頻拍周期長の有意な影響(Significant Influence of Ventricular Tachycardia Cycle Length on Efficacy of Anti-tachycardia Pacing in Implantable Cardioverter-defibrillator Patients)

  Takami Kaoru, Yoshida Akihiro, Fukuzawa Koji, Tanaka Satoko, Takami Mitsuru, Itoh Mitsuaki, Imamura Kimitake, Matsumoto Ryudo, Hirata Kenichi

  (一社)日本循環器学会, Mar. 2010, Circulation Journal, 74(Suppl.I) (Suppl.I), 276 - 277, English


• 心臓再同期療法を施行中の患者の死亡率 ペースメーカーと植込み型除細動器との比較(Mortality of Patients with Cardiac Resynchronization Therapy: Pacemaker versus Implantable Cardioverter Defibrillator)

  Kumagai Hiroyuki, Shimizu Hiroki, Kadotani Makoto, Kawasaki Satoru, Kaihotsu Kenji, Kudoh Yoshihiro, Ban Chikanori, Nonaka Yasuyuki, Yamana Shota, Yoshida Akihiro, Fukuzawa Koji, Takami Kaoru, Tanaka Satoko, Takami Mitsuru, Itoh Mitsuaki, Okajima Katsunori, Shimane Akira, Kanda Gaku, Mizutani Kazuo

  (一社)日本循環器学会, Mar. 2010, Circulation Journal, 74(Suppl.I) (Suppl.I), 330 - 330, English


• 抗凝固療法およびデバイス植込みを受けた患者において周術期のヘパリンブリッジングは出血性合併症リスクを高める(Peri-operatieve Heparin Bridging Increase the Risk of Bleeding Complication in Patients with Anti-coagulation Therapy and Device Implantation)

  Matsumoto Ryudo, Hirata Kenichi, Yoshida Akihiro, Fukuzawa Koji, Takami Kaoru, Takami Mitsuru, Torii Satoko, Itoh Mitsuaki

  (一社)日本循環器学会, Mar. 2010, Circulation Journal, 74(Suppl.I) (Suppl.I), 330 - 331, English


• Myocardial Contractile Function in the Region of the Left Ventricular Pacing Lead Predicts the Response to Cardiac Resynchronization Therapy Assessed by Two-Dimensional Speckle Tracking Echocardiography

  Kazuko Norisada, Hiroya Kawai, Hidekazu Tanaka, Kazuhiro Tatsumi, Tetsuari Onishi, Koji Fukuzawa, Akihiro Yoshida, Ken-ichi Hirata

  Feb. 2010, JOURNAL OF THE AMERICAN SOCIETY OF ECHOCARDIOGRAPHY, 23(2) (2), 181 - 189, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• 心臓再同期療法におけるBeat-to-Beat QT dispersionによる再分極の時間的変化の検討

  伊藤 光哲, 吉田 明弘, 福沢 公二, 高見 薫, 熊谷 寛之, 田中 聡子, 高見 充, 平田 健一

  Japan Heart Foundation, 2010, 心臓, 42(1) (1), S1_3 - S1_3, Japanese


• Dilated phase of hypertrophic cardiomyopathy caused by Fabry disease with atrial flutter and ventricular tachycardia

  Koji Fukuzawa, Akihiro Yoshida, Tetsuari Onishi, Atsushi Suzuki, Gaku Kanda, Kaoru Takami, Hiroyuki Kumagai, Satoko Torii, Mitsuru Takami, Yuko Fukuda, Hiroya Kawai, Ken-ichi Hirata

  Aug. 2009, JOURNAL OF CARDIOLOGY, 54(1) (1), 139 - 143, English

  [Refereed]

  Scientific journal


• 植込み型除細動器レシピエントにおける単形性心室頻拍のElectrical Stormに対する救済的カテーテルアブレーション(Rescue Catheter Ablation for Electrical Storm of Monomorphic Ventricular Tachycardia in Implantable Cardioverter Defibrillator Recipients)

  Fukuzawa Koji, Yoshida Akihiro, Takami Kaoru, Kumagai Hiroyuki, Torii Satoko, Takami Mitsuru, Itou Mitsuaki, Hirata Kenichi

  (一社)日本循環器学会, Mar. 2009, Circulation Journal, 73(Suppl.I) (Suppl.I), 685 - 685, English


• 通常型心房粗動患者における非接触型マッピングにより評価した静脈洞領域での心拍及び方向依存性の伝導ブロック(Rate- and Direction-dependent Conduction Block at the Sinus Venosa Region Evaluated by Non-contact Mapping in Patients with Typical Atrial Flutter)

  Takami Mitsuru, Yoshida Akihiro, Fukuzawa Koji, Takami Kaoru, Kumagai Hiroyuki, Torii Satoko, Itou Mitsuaki, Hirata Kenichi

  (一社)日本循環器学会, Mar. 2009, Circulation Journal, 73(Suppl.I) (Suppl.I), 689 - 689, English


• 植込み型除細動器(ICD)植込み患者の植込み後1年間における気分状態の推移

  齊藤 奈緒, 多留 ちえみ, 吉田 明弘, 福沢 公二, 高見 薫, 熊谷 寛之, 高見 充, 鳥居 聡子, 塩谷 英之, 平田 健一, 宮脇 郁子

  日本補完代替医療学会, Nov. 2008, 日本補完代替医療学会学術集会プログラム・抄録集, 11回, 80 - 80, Japanese


• Upper turnover portion of the reentry circuit for typical and reverse typical atrial flutter

  Koji Fukuzawa, Akihiro Yoshida, Shinya Kubo, Takatsugu Takano, Kunihiko Kiuchi, Gaku Kanda, Kaoru Takami, Hiroyuki Kumagai, Satoko Torii, Mitsuru Takami, Yoshio Ohnishi, Katsunori Okajima, Ken-ichi Hirata

  Sep. 2008, PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY, 31(9) (9), 1160 - 1167, English

  Scientific journal


• 鬱血性心不全患者における時間的・空間的心室再分極に対する心臓再同期療法の影響(Influence of Cardiac Resynchronization Therapy on Temporal and Spatial Ventricular Repolarization in Patients with Congestive Heart Failure)

  Kumagai Hiroyuki, Yoshida Akihiro, Fukuzawa Koji, Kanda Gaku, Takami Kaoru, Torii Satoko, Takami Mitsuru, Hirata Kenichi

  (一社)日本循環器学会, Mar. 2008, Circulation Journal, 72(Suppl.I) (Suppl.I), 708 - 708, English


• Endocardial substrate mapping for monomorphic ventricular tachycardia ablation in ischemic and non-ischemic cardiomyopathy

  Koji Fukuzawa, Akihiro Yoshida, Shinya Kubo, Takatsugu Takano, Kunihiko Kiuchi, Gaku Kanda, Kaoru Takami, Hiroyuki Kumagai, Satoko Torii, Mitsuru Takami, Mitsuhiro Yokoyama, Ken-Ichi Hirata

  2008, Kobe Journal of Medical Sciences, 54(2) (2), E122 - E135, English

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Identification of Functional Block Line in Atrial Flutter Using Three-Dimensional Intracardiac Echocardiography

  Akihiko Ishida, Akihiro Yoshida, Hidetsuna Kitamura, Shinya Kubo, Koji Fukuzawa, Kouhei Yamashiro, Mitsuhiro Yokoyama

  Nov. 2003, Circulation Journal, 67(11) (11), 940 - 944, English

  [Refereed]

  Scientific journal

• 心臓デバイス(ICD、CRT-D、CRT-P)植込み心不全患者の活動と睡眠の実態

  植村 優衣, 齊藤 奈緒, 朴 成美, 白石 裕一, 福沢 公二, 多留 ちえみ, 宮脇 郁子

  (一社)日本循環器学会, Mar. 2019, 日本循環器学会学術集会抄録集, 83回, CP10 - 1, Japanese


• 遠隔モニタリング診療を受けている心臓デバイス(ICD、CRT-D)植込み患者の心理社会的特徴の検討

  小川 智美, 福沢 公二, 齊藤 奈緒, 谷岡 怜, 林 女久美, 木内 邦彦, 太田 雅也, 籠谷 圭造, 宮脇 郁子, 平田 健一

  (一社)日本循環器学会, Mar. 2019, 日本循環器学会学術集会抄録集, 83回, CP27 - 3, Japanese


• Monocyte-to-HDL-cholesterol ratio and left atrial remodelling in atrial fibrillation: author's reply

  Atsushi Suzuki, Koji Fukuzawa, Tomoya Yamashita, Naoto Sasaki, Ken-ichi Hirata

  Aug. 2017, EUROPACE, 19(8) (8), 1409 - 1410, English

  Report scientific journal


• 不整脈治療の新展開 DE-MRIガイド下カテーテルアブレーション(DE-MRI Guided Catheter Ablation)

  木内 邦彦, 福沢 公二, 森 俊平, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 今田 宙志, 黒瀬 潤, 秋田 朋己, 末廣 英也, 永松 裕一, 平田 健一, 西井 達矢, 河野 淳, 根宜 典行, 京谷 勉輔, 福家 啓起, 青木 恒介, 嶋根 章

  (一社)日本循環器学会, Mar. 2017, 日本循環器学会学術集会抄録集, 81回, SY15 - 3, English


• 心外膜アブレーションに使用する上腹壁動脈の解剖学的特性(Anatomical Feature of the Superior Epigastric Artery for Epicardial Ablation)

  永松 裕一, 森 俊平, 福沢 公二, 木内 邦彦, 藤原 征, 小西 弘樹, 市堀 博俊, 今田 宙志, 兵庫 聖大, 黒瀬 潤, 伊澤 有, 末廣 英也, 秋田 朋己, 西井 達矢, 河野 淳, 平田 健一

  (一社)日本循環器学会, Mar. 2017, 日本循環器学会学術集会抄録集, 81回, PJ - 246, English


• 2回のリード抜去を要した後にシリコン被膜が残存し開胸にて摘出となったデバイス感染の一例

  市堀博俊, 木内邦彦, 福沢公二, 小西弘樹, 今田宙志, 兵庫聖大, 黒瀬潤, 末廣英也, 永松裕一, 秋田朋己, 松本賢亮, 森俊平, 平田健一, 西井達矢, 山田貴之

  2016, 日本循環器学会近畿地方会(Web), 122nd


• 術前CTによる穿刺シミュレーションが安全な心外膜VTアブレーションに有用であった一例

  永松裕一, 福沢公二, 森俊平, 木内邦彦, 小西弘樹, 市堀博俊, 今田宙志, 兵庫聖大, 黒瀬潤, 末廣英也, 秋田朋己, 西井達矢, 平田健一

  2016, 日本循環器学会近畿地方会(Web), 122nd


• Increasing Stimulus Strength of Coronary Sinus Pacing Improved Left Ventricular Mechanical Dyssynchrony and Contractile Function in Patients With Reduced Ejection Fraction

  Kazuhiro Tatsumi, Hidekazu Tanaka, Kensuke Matsumoto, Dokuni Kumiko, Yutaka Hatani, Keiko Hatazawa, Hiroaki Matsuzoe, Junichi Ooka, Hiroyuki Sano, Hiroyuki Shimoura, Takuma Sawa, Yoshiki Motoji, Yasuhide Mochizuki, Keiko Ryo, Koji Fukuzawa, Ken-ichi Hirata

  Nov. 2015, CIRCULATION, 132, English

  Summary international conference


• 軽度左室収縮能低下患者における右室ペーシングの影響

  大岡 順一, 田中 秀和, 堂國 久美子, 羽渓 優, 畑澤 圭子, 松添 弘樹, 下浦 広之, 佐野 浩之, 佐和 琢磨, 元地 由樹, 望月 泰秀, 漁 恵子, 松本 賢亮, 福沢 公二, 平田 健一

  (一社)日本心臓病学会, Sep. 2015, 日本心臓病学会学術集会抄録, 63回, 712 - 712, Japanese


• CIRCULATING INTERMEDIATE CD14++CD16+MONOCYTES ARE INCREASED IN PATIENTS WITH ATRIAL FIBRILLATION AND REFLECT FUNCTIONAL REMODELING OF LEFT ATRIUM

  Atsushi Suzuki, Koji Fukuzawa, Tomoya Yamashita, Akihiro Yoshida, Naoto Sasaki, Takuo Emoto, Asumi Takei, Ryudo Fujiwara, Tomoyuki Nakanishi, Soichiro Yamashita, Akinori Matsumoto, Hiroki Konishi, Hirotoshi Ichibori, Nobutaka Inoue, Ken-ichi Hirata

  Mar. 2015, JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY, 65(10) (10), A466 - A466, English

  Summary international conference


• Rescue Catheter Ablation for Electrical Storm due to Ventricular Tachycardia Can Reduce Ventricular Tachycardia and Electrical Storm Recurrence in Patients With Non-ischemic Cardiomyopathy

  Atsushi Suzuki, Akihiro Yoshida, Koji Fukuzawa, Ryudo Fujiwara, Tomoyuki Nakanishi, Soichiro Yamashita, Akinori Matsumoto, Hiroki Konishi, Hirotoshi Ichibori, Ken-ichi Hirata, Kunihiko Kiuchi, Akira Shimane, Katsunori Okajima

  Nov. 2013, CIRCULATION, 128(22) (22), English

  Summary international conference


• 肺静脈隔離後の短周期のCFAEに対するアブレーションは心房細動の再発率を減少させる

  中西 智之, 吉田 明宏, 武居 明日美, 福沢 公二, 今村 公威, 伊藤 光哲, 藤原 竜童, 鈴木 敦, 山下 宗一郎, 松本 晃典, 小西 弘樹, 市堀 博俊, Hirata Ken-ichi

  Sep. 2013, 心電図, 33(Suppl.4) (Suppl.4), S - 4-135, Japanese

  Meeting report


• 順伝導fast pathwayの頻拍回路への関与を検討し得たFast/Slow AVNRTの2例

  藤原 竜童, Yoshida Akihiro, 福沢 公二, 鈴木 敦, 中西 智之, 山下 宗一郎, 松本 晃典, 小西 弘樹, 市堀 博俊, Hirata Ken-ichi

  Sep. 2013, 心電図, 33(Suppl.4) (Suppl.4), S - 4-156, Japanese

  Meeting report


• QT延長症候群2型の遺伝子異常とQT延長症候群1型の一塩基多型を認め意識消失を繰り返した1例

  松本 晃典, 福沢 公二, Yoshida Akihiro, 藤原 竜童, 鈴木 敦, 中西 智之, 山下 宗一郎, 小西 弘樹, 市堀 博俊, Hirata Ken-ichi

  Sep. 2013, 心電図, 33(Suppl.4) (Suppl.4), S - 4-153, Japanese

  Meeting report


• 【循環器疾患の診断と治療(I)】 上室性頻拍

  福沢 公二, Hirata Ken-ichi

  Apr. 2013, 医学と薬学, 69(4号) (4号), 581 - 586, Japanese

  [Invited]

  Introduction commerce magazine


• 房室結節回帰性頻拍(AVNRT)におけるantegrade slow pathway(ASP)の電気生理的局在に関する検討

  鈴木敦, 吉田明弘, 武居明日美, 福沢公二, 木内邦彦, 伊藤光哲, 今村公威, 藤原竜童, 中西智之, 山下宗一郎, 松本晃典, 平田健一

  2013, 日本循環器学会近畿地方会(Web), 115th


• Prediction of Response to Cardiac Resynchronization Therapy Using Improvement of Coronary Flow Reserve in Patients with Non-Ischemic Cardiomyopathy

  Mitsuaki Itoh, Akihiro Yoshida, Toshiroh Shinke, Amane Kozuki, Asumi Takei, Koji Fukuzawa, Kunihiko Kiuchi, Kimitake Imamura, Ryudo Fujiwara, Atsushi Suzuki, Tomoyuki Nakanishi, Soichiro Yamashita, Akinori Matsumoto, Ken-ichi Hirata

  Nov. 2012, CIRCULATION, 126(21) (21), English

  Summary international conference


• Favorable Long-Term Clinical Outcomes Of Intravascular Ultrasound-Guided Provisional Single Stent Strategy for Feasible Unprotected Left Main Trunk Distal Bifurcation Lesions

  Takayoshi Toba, Shinichiro Yamada, Takatoshi Hayashi, Shougo Oishi, Kiminobu Yokoi, Naoki Miyoshi, Gaku Kanda, Tomofuni Takaya, Koji Fukuzawa, Katsunori Okajima, Akira Shimane, Yasuyo Taniguchi, Mitsuhiro Yokoyama

  Nov. 2011, JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY, 58(20) (20), B83 - B83, English

  Summary international conference


• The Presence and Extent of Right Ventricular Electroanatomic Scar (by CARTO System) Predict the Outcome of Patients With Right Ventricular Arrhythmias

  Federico Migliore, Alessandro Zorzi, Maria Silvano, Michela Bevilacqua, Koji Fukuzawa, Martina Perrazzolo Marra, Alessio Marinelli, Loira Leoni, Cristina Basso, Gianfranco Buja, Gaetano Thiene, Sabino Iliceto, Domenico Corrado

  Nov. 2010, CIRCULATION, 122(21) (21), English

  Summary international conference


• PJ-499 Speckle Tracking Circumferential Septal-Lateral Dyssynchrony Predicts Response to Cardiac Resynchronization Therapy(PJ084,CRT (M),Poster Session (Japanese),The 73rd Annual Scientific Meeting of The Japanese Circulation Society)

  Tatsumi Kazuhiro, Kawai Hiroya, Yamawaki Kouhei, Ryo Keiko, Salem Omar, Fukuda Yuko, Kishimoto Furuki maky fab, Okada Mariko, Norisada Kazuko, Ohnishi Tetsuari, Fukuzawa Koji, Yoshida Akihiro, Hirata Kenichi

  Japanese Circulation Society, 01 Mar. 2009, Circulation journal : official journal of the Japanese Circulation Society, 73, 671 - 672, English


• PJ-007 Three-Dimensional Electro-anatomical Mapping of Antegrade and Retrograde Fast Pathway(PJ001,Arrhythmia, Others (Clinical/Pathophysiology) 1 (A),Poster Session (Japanese),The 73rd Annual Scientific Meeting of The Japanese Circulation Society)

  Torii Satoko, Yoshida Akihiro, Fukuzawa Koji, Takami Kaoru, Kumagai Hiroyuki, Takami Mitsuru, Itou Mitsuaki, Hirata Kenichi

  Japanese Circulation Society, 01 Mar. 2009, Circulation journal : official journal of the Japanese Circulation Society, 73, 547 - 547, English


• PJ-568 Rate- and Direction-dependent Conduction Block at the Sinus Venosa Region Evaluated by Non-contact Mapping in Patients with Typical Atrial Flutter(PJ095,Arrhythmia, Others (Basic) 2 (A),Poster Session (Japanese),The 73rd Annual Scientific Meeting of The Japanese Circulation Society)

  Takami Mitsuru, Yoshida Akihiro, Fukuzawa Koji, Takami Kaoru, Kumagai Hiroyuki, Torii Satoko, Itou Mitsuaki, Hirata Kenichi

  Japanese Circulation Society, 01 Mar. 2009, Circulation journal : official journal of the Japanese Circulation Society, 73, 689 - 689, English


• PE-157 Speckle Tracking Longitudinal Post Systolic Strain Index Predicts Response to Cardiac Resynchronization Therapy(PE027,CRT (M),Poster Session (English),The 73rd Annual Scientific Meeting of The Japanese Circulation Society)

  Tatsumi Kazuhiro, Kawai Hiroya, Yamawaki Kouhei, Ryo Keiko, Salem Omar, Fukuda Yuko, Kishimoto Furuki maky fab, Okada Mariko, Norisada Kazuko, Ohnishi Tetsuari, Fukuzawa Koji, Yoshida Akihiro, Hirata Kenichi

  Japanese Circulation Society, 01 Mar. 2009, Circulation journal : official journal of the Japanese Circulation Society, 73, 438 - 438, English


• 98) 心臓再同期療法を施行し術直後より左室拡張能の改善を認めた心ファブリー病の一例(第105回日本循環器学会近畿地方会)

  鈴木 敦, 大西 哲存, 福田 優子, 呉羽 布美恵, 福沢 公二, 石田 達郎, 吉田 明弘, 川合 宏哉, 平田 健一

  社団法人日本循環器学会, 20 Oct. 2008, Circulation journal : official journal of the Japanese Circulation Society, 72, 1102 - 1102, Japanese


• 心臓Fabry病にMRIを施行した1例

  河野 淳, 魚谷 健祐, 藤井 正彦, 杉村 和朗, 福田 優子, 大西 哲存, 福沢 公二, 吉田 明弘, 川合 宏哉, 平田 健一

  (公社)日本医学放射線学会, Sep. 2008, 日本医学放射線学会秋季臨床大会抄録集, 44回, S505 - S505, Japanese


• PE-481 The Upper Turnover Portion of the Reentry Circuit of Typical Atrial Flutter(Arrhythmia, diagnosis/Pathophysiology/EPS(09)(A),Poster Session(English),The 72nd Annual Scientific Meeting of the Japanese Circulation Society)

  Fukuzawa Koji, Yoshida Akihiro, Kanda Gaku, Takami Kaoru, Kumagai Hiroyuki, Torii Satoko, Takami Mitsuru, Hirata Kenichi

  Japanese Circulation Society, 01 Mar. 2008, Circulation journal : official journal of the Japanese Circulation Society, 72, 480 - 481, English


• PJ-021 Changes of Spatial Atrial Fibrillatory Cycle Length during Atrial Fibrillation before and after Pulmonary Vein Isolation(Arrhythmia, diagnosis/Pathophysiology/EPS(12)(A),Poster Session(Japanese),The 72nd Annual Scientific Meeting of the Japanese Circulation Society)

  Kanda Gaku, Yoshida Akihiro, Fukuzawa Koji, Takami Kaoru, Kumagai Hiroyuki, Torii Satoko, Takami Mitsuru, Hirata Kenichi

  Japanese Circulation Society, 01 Mar. 2008, Circulation journal : official journal of the Japanese Circulation Society, 72, 515 - 515, English


• PJ-780 Influence of Cardiac Resynchronization Therapy on Temporal and Spatial Ventricular Repolarization in Patients with Congestive Heart Failure(Arrhythmia, diagnosis / Pathophysiology / EPS(16)(A),Poster Session(Japanese),The 72nd Annual Scientific Meeting of the Japanese Circulation Society)

  Kumagai Hiroyuki, Yoshida Akihiko, Fukuzawa Koji, Kanda Gaku, Takami Kaoru, Torii Satoko, Takami Mitsuru, Hirata Kenichi

  Japanese Circulation Society, 01 Mar. 2008, Circulation journal : official journal of the Japanese Circulation Society, 72, 708 - 708, English


• OE-351 Myocardial Systolic Function in the Region of Left Ventricular Pacing Lead Predicts the Response to Cardiac Resynchronization Therapy(Heart failure, clinical(04)(M),Oral Presentation(English),The 72nd Annual Scientific Meeting of the Japanese Circulation Society)

  Norisada Kazuko, Kawai Hiroya, Fukuda Yuko, Okada Mariko, Furuki Maky, Tatsumi Kazuhiro, Kataoka Toshiya, Onishi Tetsuari, Fukuzawa Koji, Yoshida Akihiro, Hirata Kenichi

  Japanese Circulation Society, 01 Mar. 2008, Circulation journal : official journal of the Japanese Circulation Society, 72, 268 - 268, English


• Site specific transversal conduction and conduction block at posteromedial right atrium (sinus venosa region) in patients with typical atrial flutter

  Koji Fukuzawa, Akihiro Yoshida, Gaku Kanda, Kaoru Takami, Hiroyuki Kumagai, Satoko Torii, Mitsuhiro Yokoyama

  Oct. 2007, CIRCULATION, 116(16) (16), 393 - 393, English

  Summary international conference


• OJ-070 Detection of the Defibrillation Threshold Using the Upper Limit of Vulnerability Testing During Defibrillator Implantation(Arrhythmia, therapy-06, The 71st Annual Scientific Meeting of the Japanese Circulation Society)

  Takami Kaoru, Yoshida Akihiro, Fukuzawa Koji, Kanda Gaku, Kumagai Hiroyuki, Torii Satoko, Yokoyama Mitsuhiro

  Japanese Circulation Society, 01 Mar. 2007, Circulation journal : official journal of the Japanese Circulation Society, 71, 271 - 271, English


• OE-149 Electrophysiological Characteristics of Posteromedial Right Atrium (Sinus Venosa Region) and Atrial Fibrillation Occurrence after Inferior Vena Cava-Tricuspid Annulus Isthmus Ablation(Arrhythmia, diagnosis/pathophysiology/EPS-02, The 71st Annual Scientific Meeting of the Japanese Circulation Society)

  Fukuzawa Koji, Yoshida Akihiro, Kanda Gaku, Takami Kaoru, Kumagai Hiroyuki, Torii Satoko, Yokoyama Mitsuhiro

  Japanese Circulation Society, 01 Mar. 2007, Circulation journal : official journal of the Japanese Circulation Society, 71, 188 - 188, English


• 44)多発性心室性期外収縮を有する心機能低下例にカテーテルアブレーションを施行し,心機能改善を認めた1例(第101回日本循環器学会近畿地方会)

  安立 恭子, 吉田 明弘, 大島 規広, 福沢 公二, 高野 貴継, 木内 邦彦, 觀田 学, 高見 薫, 江本 憲昭, 横山 光宏

  社団法人日本循環器学会, 20 Oct. 2006, Circulation journal : official journal of the Japanese Circulation Society, 70, 1220 - 1220, Japanese


• 120)DDDペーシングによりelectrical stormを回避できた心室中部閉塞(MVO)を伴う肥大型心筋症の1例(第100回日本循環器学会近畿地方会)

  高野 貴継, 吉田 明弘, 北村 秀綱, 福沢 公二, 木内 邦彦, 觀田 学, 高見 薫, 横山 光宏

  社団法人日本循環器学会, 20 Apr. 2006, Circulation journal : official journal of the Japanese Circulation Society, 70, 1119 - 1119, Japanese


• 111)心不全改善後のelectrical stormに対しアブレーションを施行したALアミロイドーシスの1例(第100回日本循環器学会近畿地方会)

  白坂 知識, 吉田 明弘, 北村 秀綱, 福沢 公二, 高野 貴継, 木内 邦彦, 觀田 学, 高見 薫, 志手 淳也, 藤岡 由夫, 横山 光宏

  社団法人日本循環器学会, 20 Apr. 2006, Circulation journal : official journal of the Japanese Circulation Society, 70, 1118 - 1118, Japanese


• PE-155 Endocardial Substrate Mapping and Ablation for Monomorphic Ventricular Tachycardia in Patients with Ischemic and Nonischemic Cardiomyopathy(Arrhythmia, therapy-11 (A) PE26,Poster Session (English),The 70th Anniversary Annual Scientific Meeting of the Japanese Circulation Society)

  Fukuzawa Koji, Yoshida Akihiro, Kitamura Hidetsuna, Takano Takatsugu, Kiuchi Kunihiko, Kanda Gaku, Takami Kaoru, Yokoyama Mitsuhiro

  Japanese Circulation Society, 01 Mar. 2006, Circulation journal : official journal of the Japanese Circulation Society, 70, 373 - 373, English


• PJ-159 The Early Effects of Carvediol Therapy on Beat-to-beat QT dispersion in Patients with Congestive Heart Failure(ECG/Body surface potential mapping/Holter-6 () PJ27,Poster Session (Japanese),The 70th Anniversary Annual Scientific Meeting of the Japanese Circulation Society)

  Takano Takatsugu, Yoshida Akihiro, Kitamura Hidetsuna, Fukuzawa Koji, Kiuchi Kunihiko, Kanda Gaku, Takami Kaoru, Yokoyama Mitsuhiro

  Japanese Circulation Society, 01 Mar. 2006, Circulation journal : official journal of the Japanese Circulation Society, 70, 529 - 529, English


• PE-544 Efficacy of Burst Pacing Set in 91% of Cycle-length, 13 Pulses for Ventricular Tachycardia in Patents with Implantable Cardioverter-Defibrillator(Arrhythmia, therapy-13 (A) PE92,Poster Session (English),The 70th Anniversary Annual Scientific Meeting of the Japanese Circulation Society)

  Takami Kaoru, Yoshida Akihiro, Kitamura Hidetsuna, Fukuzawa Koji, Takano Takatsugu, Kiuchi Kunihiko, Kanda Gaku, Yokoyama Mitsuhiro

  Japanese Circulation Society, 01 Mar. 2006, Circulation journal : official journal of the Japanese Circulation Society, 70, 468 - 469, English


• 家族性肥大型心筋症の2例, 除細動器の予防的埋込の適応について(第99回日本循環器学会近畿地方会)

  上月 周, 吉田 明弘, 高橋 玄倫, 北村 秀綱, 久保 信也, 福沢 公二, 高野 貴継, 木内 邦彦, 觀田 学, 藤岡 由夫, 川嶋 成乃亮, 横山 光宏

  社団法人日本循環器学会, 20 Oct. 2005, Circulation journal : official journal of the Japanese Circulation Society, 69, 975 - 975, Japanese


• Risk Stratification for Cardiac Events in Patients with Organic Heart Disease and Low Ejection Fraction Using Beat-to-Beat QT Dispersion (ECG/Body Surface Potential Mapping/Holter 7 (A), The 69th Annual Scientific Meeting of the Japanese Circulation Society)

  Takano Takatsugu, Yoshida Akihiro, Kitamura Hidetsuna, Kubo Shinya, Fukuzawa Koji, Kiuchi Kunihiko, Kanda Gaku, Yokoyama Mitsuhiro

  Japanese Circulation Society, 01 Mar. 2005, Circulation journal : official journal of the Japanese Circulation Society, 69, 631 - 632, English


• Radiofrequency Catheter Ablation for Drug Refractory Electrical Storm in Implantable Cadioverter Defibrillator Recipients(Arrhythmia, Non-pharmacological Therapy 7 (A), The 69th Annual Scientific Meeting of the Japanese Circulation Society)

  Fukuzawa Koji, Yoshida Akihiro, Kitamura Hidetsuna, Kubo Shinya, Takano Takatsugu, Kiuchi Kunihiko, Kanda Gaku, Yokoyama Mitsuhiro

  Japanese Circulation Society, 01 Mar. 2005, Circulation journal : official journal of the Japanese Circulation Society, 69, 257 - 257, English


• Examination of Optimal Right Ventricular Pacing Site for Cardiac Resynchronization Therapy Guided by Electroanatomical Mapping(Heart Failure, Clinical 9 (M), The 69th Annual Scientific Meeting of the Japanese Circulation Society)

  Kiuchi Kunihiko, Yoshida Akihiro, Kitamura Hidetsuna, Kubo Shinya, Fukuzawa Koji, Takano Takatsugu, Kanda Gaku, Yokoyama Mitsuhiro

  Japanese Circulation Society, 01 Mar. 2005, Circulation journal : official journal of the Japanese Circulation Society, 69, 399 - 399, English


• OE-221 Radiofrequency Catheter Ablation Guided by Electro-Anatomical Maps (CARTO System) for Un-mappable Ventricular Tachycardia(Arrhythmia, Non-Pharmacological Therapy 9 (A) : OE27)(Oral Presentation (English))

  Fukuzawa Koji, Yoshida Akihiro, Kitamura Hidetsuna, Kubo Shinya, Takano Takatsugu, Kiuchi Kunihiko, Yokoyama Mitsuhiro

  Japanese Circulation Society, 01 Mar. 2004, Circulation journal : official journal of the Japanese Circulation Society, 68, 194 - 194, English


• PJ-400 The Predictive Value of Beat-to-Beat QT Dispersion for Stratifying Arrhythmic Risk in Ischemic Heart Disease(ECG/Body Surface Potential Mapping/Holler 5 (A) : PJ67)(Poster Session (Japanese))

  Takano Takatsugu, Yoshida Akihiro, Kitamura Hidetsuna, Kubo Shinya, Fukuzawa Koji, Kiuchi Kunihiko, Galeano Erdulfo J, Yokoyama Mitsuhiro

  Japanese Circulation Society, 01 Mar. 2004, Circulation journal : official journal of the Japanese Circulation Society, 68, 578 - 578, English


• PJ-399 The Usefullness of Beat-to-Beat QT Dispersion for Identifying Patients with Nonischemic Dialated Cardiomyopaty at Risk for Ventricular Arrhythmias(ECG/Body Surface Potential Mapping/Holler 5 (A) : PJ67)(Poster Session (Japanese))

  Takano Takatsugu, Yoshida Akihiro, Kitamura Hidetsuna, Kubo Shinya, Fukuzawa Koji, Kiuchi Hidehiko, Galleano Erdulfo J, Yokoyama Mitsuhiro

  Japanese Circulation Society, 01 Mar. 2004, Circulation journal : official journal of the Japanese Circulation Society, 68, 577 - 578, English


• 13) 急性冠症候群に対するヒト心臓由来脂肪酸結合蛋白(H-FABP)検出試薬の有用性についての検討

  田辺 慶司, 林 孝俊, 宝田 明, 上野 洋, 志手 淳也, 山田 慎一郎, 山城 荒平, 水谷 和郎, 福沢 公二, 藤井 健一, 高谷 具史, 松岡 亮, 梶谷 定志

  社団法人日本循環器学会, 20 Oct. 2002, Circulation journal : official journal of the Japanese Circulation Society, 66(0) (0), Japanese


• 26)MAZE手術後より生じた心房頻拍(AT)に対しカテーテルアブレーションに成功した1例(日本循環器学会 第92回近畿地方会)

  田辺 慶司, 山城 荒平, 水谷 和郎, 福沢 公二, 宝田 明, 林 孝俊, 上野 洋, 志手 淳也, 山田 慎一郎, 藤井 健一, 高谷 具史, 松岡 亮, 梶谷 定志

  社団法人日本循環器学会, 20 Apr. 2002, Circulation journal : official journal of the Japanese Circulation Society, 66(0) (0), Japanese


• 46)ステント挿入後,慢性期にlarge aneurysmを認めた1例(日本循環器学会 第92回近畿地方会)

  松岡 亮, 志手 淳也, 林 孝俊, 山田 慎一郎, 宝田 明, 上野 洋, 山城 荒平, 水谷 和朗, 福沢 公二, 藤井 健一, 高谷 具史, 田辺 慶司, 梶谷 定志

  社団法人日本循環器学会, 20 Apr. 2002, Circulation journal : official journal of the Japanese Circulation Society, 66(0) (0), Japanese


• Decreased cardiac 123 I-metaiodobenzylguanidine uptake predicts future deterioration of heart failure and death in patients with idiopathic dilated cardiomyopathy

  Yamada Shinichiro, Hayashi Takatoshi, Takarada Akira, Ueno Hiroshi, Shite Junya, Yamashiro Kouhei, Mizutani Kazuo, Fukuzawa Koji, Fujii Kenichi, Takaya Tomofumi, Tanabe Keiji, Matsuoka Ryou, Kajiya Teishi

  Japanese Circulation Society, 31 Mar. 2002, Circulation journal : official journal of the Japanese Circulation Society, 66, 266 - 266, English


• Effect of Carvedilol on End-Diastolic SPECT Imaging in Patients with Acute Myocardial Infarction

  Fujii Kenichi, Yamada Shinichiro, Takarada Akira, Hayashi Takatoshi, Ueno Hiroshi, Shite Junya, Yamashiro Kohei, Mizutani Kazuo, Fukuzawa Koji, Takaya Tomofumi, Tanabe Keiji, Matsuoka Ryo, Kajiya Teishi

  Japanese Circulation Society, 31 Mar. 2002, Circulation journal : official journal of the Japanese Circulation Society, 66, 269 - 269, English


• Recovery of Left Ventricular Function by Carvedilol is Associated With Concomitant Increase of Myocardial Perfusion After Acute Myocardial Infarction

  Fujii Kenichi, Yamada Shinichiro, Takarada Akira, Hayashi Takatoshi, Ueno Hiroshi, Shite Junya, Yamashiro Kohei, Mizutani Kazuo, Fukuzawa Koji, Takaya Tomofumi, Tanabe Keiji, Matsuoka Ryo, Kajiya Teishi

  Japanese Circulation Society, 31 Mar. 2002, Circulation journal : official journal of the Japanese Circulation Society, 66(0) (0), 530 - 530, English


• 83) 稀有型房室結節回帰性頻拍(UCAVNRT)に対する臨床的検討(日本循環器学会 第91回近畿地方会)

  藤井 健一, 山城 荒平, 吉田 明弘, 宝田 明, 林 孝俊, 富本 忍, 志手 淳也, 山田 慎一郎, 開発 謙次, 平野 芳奈, 福沢 公二, 高谷 具史, 宮崎 大, 梶谷 定志

  社団法人日本循環器学会, 20 Oct. 2001, Japanese circulation journal, 65, 787 - 787, Japanese


• 118) 虚血性心疾患を合併した肥大型心筋症例(日本循環器学会 第91回近畿地方会)

  高谷 具史, 宝田 明, 開発 謙次, 林 孝俊, 富本 忍, 志手 淳也, 吉田 明弘, 山田 慎一郎, 山城 荒平, 平野 芳奈, 福沢 公二, 藤井 健一, 宮崎 大, 梶谷 定志

  社団法人日本循環器学会, 20 Oct. 2001, Japanese circulation journal, 65(0) (0), Japanese


• 肥大型心筋症 虚血性心疾患を合併した肥大型心筋症例

  高谷具史, 宝田明, 林孝俊, 吉田明弘, 山田慎一郎, 福沢公二, 藤井健一, 宮崎大, 梶谷定志

  28 Sep. 2001, 診療と新薬, 38(9) (9), 828 - 830, Japanese


• 44) 房室結節アブレーションとVVIペースメーカー挿入にて心不全の改善をみた拡張型心筋症の一例

  福沢 公二, 志手 淳也, 吉田 明弘, 宝田 明, 林 孝俊, 津村 泰弘, 山田 愼一郎, 山城 荒平, 開発 謙次, 平野 加奈, 藤井 健一, 高谷 具史, 宮崎 大, 梶谷 定志

  社団法人日本循環器学会, 20 Apr. 2001, Japanese circulation journal, 65, 648 - 648, Japanese


• 73) Disopyramide の多量内服により心原性ショックをきたした一例

  高谷 具史, 山田 愼一郎, 志手 淳也, 宝田 明, 林 孝俊, 津村 泰弘, 吉田 明弘, 山城 荒平, 開発 謙次, 平野 芳奈, 福沢 公二, 藤井 健一, 宮崎 大, 梶谷 定志

  社団法人日本循環器学会, 20 Apr. 2001, Japanese circulation journal, 65(0) (0), Japanese


• 24) PCPS下でPTCAを施行した3枝閉塞による急性心筋梗塞の1例

  福家 啓起, 林 孝俊, 山田 慎一郎, 宝田 明, 津村 泰弘, 吉田 明弘, 板垣 毅, 開発 謙次, 福沢 公二, 平野 芳奈, 梶谷 定志

  社団法人日本循環器学会, 20 Oct. 2000, Japanese circulation journal, 64, 916 - 916, Japanese


• 96) 薬剤抵抗性の重症心室性不整脈に対し塩酸nifekalentを使用した6例の検討

  開発 謙次, 吉田 明弘, 板垣 毅, 宝田 明, 林 孝俊, 津村 泰弘, 山田 愼一郎, 福家 啓起, 平野 加奈, 福沢 公二, 梶谷 定志

  社団法人日本循環器学会, 20 Oct. 2000, Japanese circulation journal, 64, 924 - 924, Japanese


• 43) 催不整脈性右室異形成による持続性心室頻拍に対するICD植え込み後心不全にて死亡した1症例

  開発 謙次, 吉田 明弘, 板垣 毅, 梶谷 定志, 宝田 明, 林 孝俊, 津村 泰弘, 山田 慎一郎, 福家 啓起, 内藤 由朗, 福沢 公二, 銕 寛之

  社団法人日本循環器学会, 20 Apr. 2000, Japanese circulation journal, 64, 795 - 795, Japanese


• 15) gfxステント植え込み後におけるシロスタゾールの有用性

  林 孝俊, 梶谷 定志, 宝田 明, 津村 康弘, 吉田 明弘, 板垣 毅, 福家 啓起, 内藤 由朗, 開發 謙次, 福沢 公二, 銕 寛之

  社団法人日本循環器学会, 20 Apr. 2000, Japanese circulation journal, 64, 791 - 791, Japanese


• 61) 右冠動脈責任病変の急性心筋梗塞に左主幹部起始部の冠攣縮を合併した1症例

  福家 啓起, 林 孝俊, 梶谷 定志, 宝田 明, 津村 泰弘, 吉山 昭弘, 板垣 毅, 山田 慎一郎, 内藤 由朗, 開發 謙次, 福沢 公二, 銕 寛之

  社団法人日本循環器学会, 20 Apr. 2000, Japanese circulation journal, 64, 797 - 797, Japanese


• 0308 急性心筋梗塞に対するdirect PTCAによるサルベージ効果の規定因子 : 罹患血管による差異

  梶谷 定志, 銕 寛之, 山田 慎一郎, 津村 泰広, 林 孝俊, 宝田 明, 吉田 明弘, 板垣 毅, 福家 啓起, 内藤 由朗, 開発 謙次, 福沢 公二

  社団法人日本循環器学会, 01 Mar. 2000, Japanese circulation journal, 64, 262 - 262, Japanese


• 0467 重症不安定狭心症における冠動脈形成術 : ステントによる治療成績の検討

  内藤 由朗, 林 孝俊, 梶谷 定志, 宝田 明, 津村 泰弘, 吉田 明弘, 板垣 毅, 山田 慎一郎, 福家 啓起, 開發 謙次, 福沢 公二, 銕 寛之

  社団法人日本循環器学会, 01 Mar. 2000, Japanese circulation journal, 64, 302 - 302, Japanese


• P436 シロスタゾールはgfxステント再狭窄予防に有効か?

  林 孝俊, 梶谷 定志, 宝田 明, 津村 泰弘, 吉田 明弘, 板垣 毅, 山田 慎一郎, 福家 啓起, 内藤 由朗, 開發 謙次, 福沢 公二, 銕 寛之

  社団法人日本循環器学会, 01 Mar. 2000, Japanese circulation journal, 64, 568 - 568, Japanese


• P930 器質的心疾患を有する非持続性心室頻拍例におけるT wave alternansについての検討 : 電気生理学的検査と心室遅延電位との比較

  吉田 明弘, 板垣 毅, 梶谷 定志, 宝田 明, 林 孝俊, 津村 泰弘, 山田 慎一郎, 福家 啓起, 内藤 由朗, 開發 謙次, 福沢 公二, 銕 寛之

  社団法人日本循環器学会, 01 Mar. 2000, Japanese circulation journal, 64, 692 - 692, Japanese


• P595 持続性心室頻拍に対するdl-ソタロールの臨床電気生理学的効果に関する検討

  板垣 毅, 吉田 明弘, 梶谷 定志, 宝田 明, 林 孝俊, 津村 泰弘, 山田 愼一郎, 福家 啓起, 開發 謙次, 内藤 由朗, 福沢 公二, 銕 寛之

  社団法人日本循環器学会, 01 Mar. 2000, Japanese circulation journal, 64, 608 - 608, Japanese

• 心臓デバイス（ICD-CRT-D,CRT-P）植込み心不全患者の活動と睡眠の実態

  植村 優衣, SAITO NAO, 朴 成美, 白石 裕一, FUKUZAWA KOJI, 多留 ちえみ, MIYAWAKI IKUKO

  第83回日本循環器学会学術集会, Mar. 2019, Japanese, 横浜市, Domestic conference

  Poster presentation


• 遠隔モニタリング診療を受けている心臓デバイス（ICD、CRTD）植込み患者の心理社会的特徴の検討

  小川智美, FUKUZAWA KOJI, SAITO NAO, 谷岡怜, 林女久美, KIUCHI KUNIHIKO, 太田雅也, 籠谷圭造, MIYAWAKI IKUKO, HIRATA KENICHI

  第83回日本循環器学会学術集会, Mar. 2019, Japanese, 日本循環器学会, 横浜, Domestic conference

  Poster presentation


• 遠隔モニタリング診療を受けている心臓デバイス（ICD/CRTD）植込み患者の心理社会的特徴の検討(第2報).

  小川 智美, FUKUZAWA KOJI, SAITO NAO, 谷岡 怜, 林 女久美, KIUCHI KUNIHIKO, 太田 雅也, 籠谷 圭造, MIYAWAKI IKUKO, HIRATA KENICHI

  第83回日本循環器学会学術集会, Mar. 2019, Japanese, 横浜市, Domestic conference

  Poster presentation


• The lesion distribution after pulmonary vein isolation using balloon catheter : LGE-MRI analysis

  Tomomi Akita, Kunihiko Kiuchi, Koji Fukuzawa, Mitsuru Takami, Shumpei Mori, Yu Izawa, Jun Kurose, Hideya Suehiro, Yu-ichi Nagamatsu, Makoto Takemoto, Toshihiro Nakamura, Jun Sakai, Atsusuke Yatomi, Kenichi Hirata, Shinsuke Shimoyama, Noriyuki Negi, Katsusuke Kyotatni

  第83回日本循環器学会学術集会, Mar. 2019, English, 日本循環器学会, 横浜, Domestic conference

  Oral presentation


• The Correlation between Circulating Intermediate CD14++CD16+Monocytes and Atrial Electrical Remodeling in Atrial Fibrillation Patients

  Hideya Suehiro, Koji Fukuzawa, Tomoya Yamashita, Naofumi Yoshida, Kunihiko Kiuchi, Mitsuru Takami, Jun Kurose, Tomomi Akita, Yu-ichi Nagamatsu, Makoto Takemoto, Toshihiro Nakamura, Jun Sakai, Atsusuke Yatomi, Kenichi Hirata

  第83回日本循環器学会学術集会, Mar. 2019, Japanese, 日本循環器学会, 横浜, Domestic conference

  Poster presentation


• The Characteristics of Onset Timing of the Coronary Artery Spasm during an Atrial Fibrillation Ablation Procedure

  Toshihiro Nakamura, Mitsuru Takami, Koji Fukuzawa, Kunihiko Kiuchi, Jun Kurose, Tomomi Akita, Hideya Suehiro, Yu-ichi Nagamatsu, Makoto Takemoto, Jun Sakai, Atsusuke Yatomi, Kenichi Hirata

  第83回日本循環器学会学術集会, Mar. 2019, Japanese, 日本循環器学会, 横浜, Domestic conference

  Oral presentation


• Lesion characteristics assessed by LGE-MRI between cryo-balloon ablation and radiofrequency ablation with contact-force sensing catheter

  Jun Kurose, Kunihiko Kiuchi, Koji Fukuzawa, Mitsuru Takami, Shumpei Mori, Yu Izawa, Tomomi Akita, Hideya Suehiro, Yu-ichi Nagamatsu, Makoto Takemoto, Toshihiro Nakamura, Jun Sakai, Atsusuke Yatomi, Kenichi Hirata, Shinsuke Shimoyama, Noriyuki Negi, Katsusuke Kyotatni

  第83回日本循環器学会学術集会, Mar. 2019, English, 日本循環器学会, 横浜, Domestic conference

  Oral presentation


• Impact of Different Radiofrequency Power Settings on Tissue Temperature Profiles Under the Same Ablation Index

  Makoto Takemoto, Mitsuru Takami, Koji Fukuzawa, Kunihiko Kiuchi, Jun Kurose, Hideya Suehiro, Yu-ichi Nagamatsu, Tomomi Akita, Jun Sakai, Toshihiro Nakamura, Atsusuke Yatomi, Kenichi Hirata

  第83回日本循環器学会学術集会, Mar. 2019, English, 日本循環器学会, 横浜, Domestic conference

  Oral presentation


• Impact of Anisotropic Conduction Property in the Left Atrium following Pulmonary Vein Isolation on the Inducibility of Atrial Tachycardia

  Mitsuru Takami, Ryudo Fujiwara, Koji Fukuzawa, Kunihiko Kiuchi, Atsushi Suzuki, Jun Kurose, Hideya Suehiro, Yuichi Nagamatsu, Tomomi Akita, Makoto Takemoto, Toshihiro Nakamura, Jun Sakai, Atsusuke Yatomi, Junya Shite, Kenichi Hirata

  第83回日本循環器学会学術集会, Mar. 2019, Japanese, 日本循環器学会, 横浜, Domestic conference

  Oral presentation


• Feasibility of Imaging Fibrotic Substrates in the Left Atrium using LGE-MRI Technology

  Kunihiko Kiuchi, Koji Fukuzawa, Mitsuru Takami, Shumpei Mori, Yu Izawa, Jun Kurose, Tomomi Akita, Hideya Suehiro, Yu-ichi Nagamatsu, Makoto Takemoto, Toshihiro Nakamura, Jun Sakai, Atsusuke Yatomi, Kenichi Hirata, Shinsuke Shimoyama, Noriyuki Negi, Katsusuke Kyotatni

  第83回日本循環器学会学術集会, Mar. 2019, English, 日本循環器学会, 横浜, Domestic conference

  Public symposium


• Comprehensive Simplified Left Atrial Assessment for Predicting Recurrence of Atrial Fibrillation Following Pulmonary Vein Isolation in Patients with Paroxysmal Atrial Fibrillation

  Fumitaka Soga, Hidekazu Tanaka, Yasuhide Mochizuki, Kentaro Yamashita, Yusuke Tanaka, Ayu Shono, Makiko Suzuki, Sachiko Yoshikawa, Keiko Sumimoto, Nao Shibata, Shun Yokota, Jun Mukai, Makiko Suto, Hiroki Takada, Kumiko Dokuni, Keiko Hatazawa, Eriko Hisamatsu, Kensuke Matsumoto, Koji Fukuzawa, Kenichi Hirata

  The 68th Annual Scientific Session of the American College of Cardiology, Mar. 2019, English, New Orleans, International conference

  Poster presentation


• Comprehensive Simplified Left Atrial Approach for Predicting Recurrence of Atrial Fibrillation Following Pulmonary Vein Isolation in Patients with Atrial Fibrillation

  Fumitaka Soga, Hidekazu Tanaka, Yasuhide Mochizuki, Kentaro Yamashita, Yusuke Tanaka, Ayu Shono, Makiko Suzuki, Sachiko Yoshikawa, Keiko Sumimoto, Nao Shibata, Shun Yokota, Jun Mukai, Makiko Suto, Hiroki Takada, Kumiko Dokuni, Keiko Hatazawa, Eriko Hisamatsu, Kensuke Matsumoto, Koji Fukuzawa, Kenichi Hirata

  第83回日本循環器学会学術集会, Mar. 2019, Japanese, 横浜, Domestic conference

  Poster presentation


• A Novel Unshielded Magnetocardiography System: The 1st Performance Test in 25 Healthy Male Volunteers

  Koji Fukuzawa, Kunihiko Kiuchi, Mitsuru Takami, Kenichi Hirata, Bunichi Kakinuma, Takeshi Tanaka, Yoshiyuki Hata, Yuji Ogata

  第83回日本循環器学会学術集会, Mar. 2019, English, 日本循環器学会, 横浜, Domestic conference

  Oral presentation


• 長期植込み後に心理的負担によってICD全システム抜去に至った一例

  小川智美, 谷口弥生, 竹本良, 秋田朋己, 永松裕一, 末廣英也, 黒瀬潤, KIUCHI KUNIHIKO, FUKUZAWA KOJI, HIRATA KENICHI

  第11回植込みデバイス関連冬季大会, Feb. 2019, Japanese, 日本不整脈心電学会, 東京, Domestic conference

  Oral presentation


• 不顕性副伝導路を介するPseudo VTの一例

  中村俊宏, FUKUZAWA KOJI, KIUCHI KUNIHIKO, TAKAMI MITSURU, 黒瀬潤, 永松裕一, 末廣英也, 秋田朋己, 竹本良, 矢冨敦亮, 坂井淳, HIRATA KENICHI

  カテーテルアブレーション関連秋季大会2018, Nov. 2018, Japanese, 日本不整脈心電学会, 沖縄, Domestic conference

  Oral presentation


• 僧帽弁機械弁置換術，Maze 術後の僧帽弁輪を旋回する心房頻拍に冠静脈洞内での通電が有効であった一例

  坂井淳, FUKUZAWA KOJI, TANAKA HIDEKAZU, KIUCHI KUNIHIKO, TAKAMI MITSURU, 黒瀬潤, 末廣英也, 秋田朋己, 永松裕一, 竹本良, 中村俊宏, 矢冨敦亮, HIRATA KENICHI

  第126回日本循環器学会 近畿地方会, Nov. 2018, Japanese, 大阪, Domestic conference

  Oral presentation


• 下大静脈-三尖弁輪峡部通電により右冠動脈の血腫圧排，閉塞をきたした1 例 ～血管内超音波と3次元CTからの考察～

  TAKAMI MITSURU, FUKUZAWA KOJI, KIUCHI KUNIHIKO, MORI SHUNPEI, KAWAMORI HIROYUKI, 下山真介, 伊澤有, 黒瀬潤, 永松裕一, 秋田朋己, 末廣 英也, 竹本 良, 坂井淳, 矢冨敦亮, 中村俊宏, HIRATA KENICHI

  カテーテルアブレーション関連秋季大会2018, Nov. 2018, Japanese, 日本不整脈心電学会, 沖縄, Domestic conference

  Oral presentation


• ICD適切作動を伴うVF発作に対しカテーテルアブレーションが奏功したBrugada症候群の1例

  末廣 英也, FUKUZAWA KOJI, KIUCHI KUNIHIKO, TAKAMI MITSURU, 黒瀬 潤, 秋田 朋己, 永松 裕一, 竹本 良, 坂井 淳, 中村 俊宏, 矢冨 敦亮, HIRATA KENICHI

  カテーテルアブレーション関連秋季大会2018, Nov. 2018, Japanese, 日本不整脈心電学会, 沖縄, Domestic conference

  Poster presentation


• 7年の経過で心内膜面不整脈基質の著名な悪化を認めた拡張相肥大型心筋症の1例

  FUKUZAWA KOJI, KIUCHI KUNIHIKO, TAKAMI MITSURU, 黒瀬潤, 永松裕一, 末廣英也, 秋田朋己, 竹本良

  カテーテルアブレーション関連秋季大会2018, Nov. 2018, Japanese, 日本不整脈心電学会, 沖縄, Domestic conference

  Poster presentation


• Ablation of AT using 3D Mapping System-Tips and Tricks

  Koji Fukuzawa

  12th Asia Pacific Heart Rhythm Society Scientific Session, Oct. 2018, English, Asia Pacific Heart Rhythm Society, 台北, International conference

  [Invited]

  Invited oral presentation


• デバイス植込み後の患者のケアや患者指導のポイント

  SAITO NAO, PARK SUNMI, UEMURA YUI, SHIRAISHI YUICH, FUKUZAWA KOJI, TARU CHIEMI, MIYAWAKI IKUKO

  第24回日本心臓リハビリテーション学会学術集会, Jul. 2018, Japanese, 横浜市, Domestic conference

  [Invited]

  Nominated symposium


• The lesion characteristics assessed by LGE-MRI after the cryoballoon ablation and radiofrequency ablation with contact-force sensing catheter

  Jun Kurose, Koji Fukuzawa, Kunihiko Kiuchi, Shumpei Mori, Yu Izawa, Yayoi Taniguchi, Kiyohiro Hyogo, Hiroshi Imada, Hideya Suehiro, Yu-ichi Nagamatsu, Tomomi Akita, Makoto Takemoto, Kenichi Hirata, Shinsuke Shimoyama, Noriyuki Negi, Katsusuke Kyotani

  第65回日本不整脈心電学会学術大会, Jul. 2018, English, 日本不整脈心電学会, 東京, Domestic conference

  Oral presentation


• The correlation between circulating intermediate CD14++CD16+monocytes and atrial electrical remodeling in AF patients

  Hideya Suehiro, Koji Fukuzawa, Tomoya Yamashita, Naofumi Yoshida, Kunihiko Kiuchi, Mitsuru Takami, Jun Kurose, Tomomi Akita, Yu-ichi Nagamatsu, Makoto Takemoto, Kenichi Hirata

  第65回日本不整脈心電学会学術大会, Jul. 2018, English, 日本不整脈心電学会, 東京, Domestic conference

  Poster presentation


• 長期植込み後に心理的負担によってICD抜去に至った一例

  小川 智美, 谷口 弥生, 谷村 幸亮, 中野 槙介, 竹本 良, 秋田 朋己, 永松 裕一, 末廣 英也, 黒瀬 潤, 今田 宙志, 兵庫 聖大, KIUCHI KUNIHIKO, TANAKA HIDEKAZU, FUKUZAWA KOJI, HIRATA KENICHI

  第126回 日本循環器学会近畿地方会, Jun. 2018, Japanese, 大阪, Domestic conference

  Oral presentation


• 神戸大学医学部附属病院でのリード抜去の現状

  末廣 英也, FUKUZAWA KOJI, KIUCHI KUNIHIKO, 谷口 弥生, 今田 宙志, 兵庫 聖大, 黒瀬 潤, 秋田 朋己, 永松 裕一, 竹本 良, HIRATA KENICHI

  第126回 日本循環器学会近畿地方会, Jun. 2018, Japanese, 日本循環器学会, 大阪, Domestic conference

  Oral presentation


• 心機能低下並びに中等度三尖弁逆流症を併発した長期持続性心房細動に対してHis束ペーシングを導入した1症例

  河南 幸乃, 谷村 幸亮, 中野 槙介, 竹本 良, 秋田 朋己, 末廣 英也, 永松 裕一, 黒瀬 潤, 兵庫 聖大, 今田 宙志, 谷口 弥生, KIUCHI KUNIHIKO, FUKUZAWA KOJI, HIRATA KENICHI

  第126回 日本循環器学会近畿地方会, Jun. 2018, Japanese, 日本循環器学会, 大阪, Domestic conference

  Oral presentation


• 冠静脈洞瘤を合併したWPW 症候群に対し，解剖学的情報がアブレーションに有用であった１例

  西森 誠, KIUCHI KUNIHIKO, MORI SHUNPEI, 伊澤 有, 河野 慎吾, FUKUZAWA KOJI, HIRATA KENICHI

  第126回 日本循環器学会近畿地方会, Jun. 2018, Japanese, 日本循環器学会, 大阪, Domestic conference

  Oral presentation


• The Report of Initial Analysis of HYOGO ATRIAL FIBRILLATION NETWORK (HAF-NET)

  兵庫 聖大, Fukuzawa Koji, Kiuchi Kunihiko, Hirata Ken-ichi, 竹内 素志, 吉田 明弘

  第82回日本循環器学会学術集会, Mar. 2018, English, 日本循環器学会, 大阪, Domestic conference

  Oral presentation


• The Relationship between Lesion Gap Detected by Late-gadolinium Enhancement Magnetic Resonance Imaging and Recurrence of Atrial Fibrillation after Cryo-balloon Ablation

  黒瀬 潤, Fukuzawa Koji, Kiuchi Kunihiko, Mori Shunpei, 伊澤 有, 谷口 弥生, 兵庫 聖大, 今田 宙志, 末廣 英也, 永松 裕一, 秋田 朋己, 竹本 良, 秋田 朋己, Hirata Ken-ichi, 下山 真介, 根宜 典行, 京谷 勉輔

  第82回日本循環器学会学術集会, Mar. 2018, English, 日本循環器学会, 大阪, Domestic conference

  Oral presentation


• 当院における着用型自動除細動器の使用経験と有用性の検討

  谷口 弥生, Fukuzawa Koji, 竹本 良, 末廣 英也, 永松 裕一, 秋田 朋己, 黒瀬 潤, 兵庫 聖大, 今田 宙志, Kiuchi Kunihiko, Hirata Ken-ichi

  第10回日本不整脈心電学会植込みデバイス関連冬季大会, Feb. 2018, Japanese, 日本不整脈心電学会, 横浜, Domestic conference

  Oral presentation


• 心室細動蘇生例に対しS-ICD植込み後、左脚後枝領域起源心室頻 拍が原因と推測されアブレーションを行った1例

  竹本 良, Fukuzawa Koji, 秋田 朋己, 末廣 英也, 永松 裕一, 黒瀬 潤, 今田 宙志, 兵庫 聖大, 谷口 弥生, Kiuchi Kunihiko

  第10回日本不整脈心電学会植込みデバイス関連冬季大会, Feb. 2018, Japanese, 日本不整脈心電学会, 横浜, Domestic conference

  Poster presentation


• 自動閾値測定の使用下で右室単独ペーシングを生じて血行動態が破綻した拡張型心筋症,CRTD 交換後の 1 例

  永松 裕一, Fukuzawa Koji, Kiuchi Kunihiko, 今田 宙志, 兵庫 聖大, 黒瀬 潤, 末廣 英也, 秋田 朋己, 中野 槙介, 谷村 幸亮, 竹本 良, Hirata Ken-ichi

  第10回日本不整脈心電学会植込みデバイス関連冬季大会, Feb. 2018, Japanese, 日本不整脈心電図学会, 横浜, Domestic conference

  Oral presentation


• デバイス植込み患者の遠隔モニタリング診療に対する看護支援効果に関する検証的臨床研究-第１報-

  小川 智美, FUKUZAWA KOUJI, SAITO NAO, MIYAWAKI IKUKO, 谷岡 怜, KIUCHI KUNIHIKO, 林 女久美, 太田 雅也, 籠谷 圭造, HIRATA KENICHI

  第10回植込みデバイス関連冬季大会, Feb. 2018, Japanese, 横浜, Domestic conference

  Oral presentation


• デバイス植え込み患者の遠隔モニタリング診療に対する看護支援効果に関する検証的臨床研究

  小川 智美, Fukuzawa Koji, Saitoh Nao, 谷岡 怜, 林 女久美, Kiuchi Kunihiko, 太田 雅也, 籠谷 圭造, Miyawaki Ikuko, Hirata Ken-ichi

  第10回日本不整脈心電学会植込みデバイス関連冬季大会, Feb. 2018, Japanese, 日本不整脈心電学会, 横浜, Domestic conference

  Oral presentation


• CRTD植込み後の疼痛に対して、局所麻酔による神経ブロックにて鎖骨上神経の関与を診断し、対処した一例

  今田 宙志, Fukuzawa Koji, Kiuchi Kunihiko, 谷口 弥生, 兵庫 聖大, 黒瀬 潤, 永松 裕一, 末廣 英也, 秋田 朋己, 竹本 良, Hirata Ken-ichi

  第10回日本不整脈心電学会植込みデバイス関連冬季大会, Feb. 2018, Japanese, 日本不整脈心電学会, 横浜, Domestic conference

  [Invited]

  Invited oral presentation


• 当院における着用型自動除細動器の使用経験と使用法の検討

  谷口 弥生, Fukuzawa Koji, 竹本 良, 末廣 英也, 永松 裕一, 秋田 朋己, 黒瀬 潤, 兵庫 聖大, 今田 宙志, Kiuchi Kunihiko, Hirata Ken-ichi

  第124回日本循環器学会近畿地方会, Nov. 2017, Japanese, 日本循環器学会, 大阪, Domestic conference

  Oral presentation


• 心房中隔欠損症を伴う心房細動に対する治療戦略

  秋田 朋己, Fukuzawa Koji, Kiuchi Kunihiko, 谷口 弥生, 兵庫 聖大, 今田 宙志, 黒瀬 潤, 末廣 英也, 永松 裕一, Hirata Ken-ichi

  第124回日本循環器学会近畿地方会, Nov. 2017, Japanese, 日本循環器学会, 大阪, Domestic conference

  Oral presentation


• 心房細動による皮下植込み型除細動器 （S-ICD）の不適切作動をきたした肥大型心筋症の1例

  竹本 良, Fukuzawa Koji, 末廣 英也, 永松 裕一, 秋田 朋己, 黒瀬 潤, 兵庫 聖大, 今田 宙志, 谷口 弥生, Kiuchi Kunihiko, Hirata Ken-ichi

  第124回日本循環器学会近畿地方会, Nov. 2017, Japanese, 日本循環器学会, 大阪, Domestic conference

  Oral presentation


• 自動閾値測定の使用下で右室単独ペーシングを生じて血行動態が破綻した、拡張型心筋症、CRTD交換後の一例

  永松 裕一, Fukuzawa Koji, Kiuchi Kunihiko, 谷口 弥生, 今田 宙志, 兵庫 聖大, 黒瀬 潤, 末廣 英也, 秋田 朋己, 竹本 良, Hirata Ken-ichi

  第124回日本循環器学会近畿地方会, Nov. 2017, Japanese, 日本循環器学会, 大阪, Domestic conference

  Oral presentation


• 右室ペーシングが診断に有用であった右脚ブロックを伴うブルガダ症候群の一例

  樋口功太郎, Kiuchi Kunihiko, 河野慎吾, 西森誠, 久松恵理子, 黒瀬潤, Fukuzawa Koji, Hirata Ken-ichi

  第124回日本循環器学会近畿地方会, Nov. 2017, Japanese, 日本循環器学会, 大阪, Domestic conference

  Oral presentation


• Relationship Between The Lesion Gap Assessed By DE-MRI And The Re-conduction Site In 2nd AF Ablation Procedure

  Kiuchi Kunihiko, Fukuzawa Koji, Mori Shunpei, 今田 宙志, 兵庫 聖大, 黒瀬 潤, 末廣 英也, 秋田 朋己, 永松 裕一, 谷口 弥生, Hirata Ken-ichi, 渡邊 慶明, 下山 真介, 根宜 典行, 京谷 勉輔

  AHA Scientifi Sessions 2017, Nov. 2017, English, American Heart Association, Anaheim, USA, International conference

  Poster presentation


• CRTD植込み後疼痛に対し、局所麻酔による神経ブロックにて鎖骨上神経の関与を 証明し、対処した一例

  今田 宙志, Fukuzawa Koji, Kiuchi Kunihiko, 谷口 弥生, 兵庫 聖大, 黒瀬 潤, 永松 裕一, 末廣 英也, 秋田 朋己, 竹本良, Hirata Ken-ichi

  第124回日本循環器学会近畿地方会, Nov. 2017, Japanese, 日本循環器学会, 大阪, Domestic conference

  Oral presentation


• Anatomical Characteristics of the Superior Epigastric Artery for Epicardial Radiofrequency Catheter Ablation

  永松 裕一, Mori Shunpei, Fukuzawa Koji, Kiuchi Kunihiko, 今田 宙志, 兵庫 聖大, 黒瀬 潤, 伊澤 有, 末廣 英也, 秋田 朋己, 竹本 良, 下山 真介, Hirata Ken-ichi

  AHA Scientific Sessions 2017, Nov. 2017, English, American Heart Association, Anaheim, USA, International conference

  Poster presentation


• The Therapeutic Strategies for The Patients with both Atrial Fibrillation and Atrial Septal Defect ; Cather Based or Surgical Approach

  秋田 朋己, Fukuzawa Koji, Kiuchi Kunihiko, 兵庫 聖大, 今田 宙志, 黒瀬 潤, 末廣 英也, 永松 裕一, Hirata Ken-ichi, Inoue Takeshi, Okita Yutaka

  The 12th Asia Pacific Rhythm Society Scientific Session In Conjunction with the Annual Meeting of the Japanese Heart Rhythm Society, Sep. 2017, Japanese, Japanese Heart Rhythm Society/Asia Pacific Heart Rhythm Society, 横浜, International conference

  Poster presentation


• The Report of Initial Analysis of HYOGO ATRIAL FIBRILLATION NETWORKThe Report of Initial Analysis of HYOGO ATRIAL FIBRILLATION NETWORK

  兵庫 聖大, Fukuzawa Koji, Kiuchi Kunihiko, Hirata Ken-ichi, 竹内 素志, 吉田 明弘

  The 15th Asia Pacific Rhythm Society Scientific Session In Conjunction with the Annual Meeting of the Japanese Heart Rhythm Society, Sep. 2017, Japanese, Japanese Heart Rhythm Society/Asia Pacific Heart Rhythm Society, 横浜市, International conference

  Poster presentation


• The lesion gap assessed by DE-MRI could predict the re-conduction site in 3nd AF ablation procedure

  Kiuchi Kunihiko, Fukuzawa Koji, Mori Shunpei, 小西 弘樹, 市堀 博俊, 今田 宙志, 兵庫 聖大, 黒瀬 潤, 末廣 英也, 秋田 朋己, 永松 裕一, Hirata Ken-ichi, 渡邊 慶明, 西井 達矢, 根宜 典行, 京谷 勉輔, 青木 恒介, 岡嶋 克則, 嶋根 章

  The 11th Asia Pacific Rhythm Society Scientific Session In Conjunction with the Annual Meeting of the Japanese Heart Rhythm Society, Sep. 2017, English, Japanese Heart Rhythm Society/Asia Pacific Heart Rhythm Society, 横浜, International conference

  Oral presentation


• Pericardiocentesis with a Modified Anterior Approach not passing through the Abdominal Cavity, Confirmation from Post-procedural Computed Tomography

  永松 裕一, Fukuzawa Koji, Kiuchi Kunihiko, Mori Shunpei, 小西 弘樹, 市堀 博俊, 今田 宙志, 兵庫 聖大, 黒瀬 潤, 末廣 英也, 秋田 朋己, Hirata Ken-ichi

  The 10th Asia Pacific Rhythm Society Scientific Session In Conjunction with the Annual Meeting of the Japanese Heart Rhythm Society, Sep. 2017, English, Japanese Heart Rhythm Society/Asia Pacific Heart Rhythm Society, 横浜, International conference

  Oral presentation


• Influence of Left Axis Deviation in Patients with Left Bundle Block on the Response to Cardiac Resynchronization Therapy

  末廣 英也, Fukuzawa Koji, Kiuchi Kunihiko, 小西 弘樹, 市堀 博俊, 今田 宙志, 兵庫 聖大, 黒瀬 潤, 秋田 朋己, 永松 裕一, Hirata Ken-ichi

  The 13th Asia Pacific Rhythm Society Scientific Session In Conjunction with the Annual Meeting of the Japanese Heart Rhythm Society, Sep. 2017, English, Japanese Heart Rhythm Society/Asia Pacific Heart Rhythm Society, 横浜, International conference

  Public symposium


• CRT implantations for Patients with NYHA IV

  Fukuzawa Koji

  The 10th Asia Pacific Rhythm Society Scientific Session In Conjunction with the Annual Meeting of the Japanese Heart Rhythm Society, Sep. 2017, English, Japanese Heart Rhythm Society/Asia Pacific Heart Rhythm Society, 横浜, International conference

  [Invited]

  Nominated symposium


• Accuracy of detecting re-conduction site after cryo-balloon ablation by using delayed enhancement magnetic resonance imaging

  黒瀬 潤, Fukuzawa Koji, Kiuchi Kunihiko, 小西 弘樹, 市掘 博俊, 兵庫 聖大, 今田 宙志, 末廣 英也, 永松 裕一, 秋田 朋己, Hirata Ken-ichi

  The 14th Asia Pacific Rhythm Society Scientific Session In Conjunction with the Annual Meeting of the Japanese Heart Rhythm Society, Sep. 2017, English, Japanese Heart Rhythm Society/Asia Pacific Heart Rhythm Society, 横浜, International conference

  Oral presentation


• 二度の心外膜カテーテルアブレーションを要した不整脈原性右室心筋症の一例

  永松 裕一, Fukuzawa Koji, Kiuchi Kunihiko, 小西 弘樹, 市堀 博俊, 今田 宙志, 兵庫 聖大, 黒瀬 潤, 末廣 英也, 秋田 朋己, Hirata Ken-ichi

  カテーテルアブレーション関連大会2017, Jul. 2017, Japanese, 日本不整脈心電学会, 札幌, Domestic conference

  Oral presentation


• 遅延造影MRIが頻拍回路の同定に有用であった持続性心房細動アブレーション慢性期に再発した心房頻拍の一例

  黒瀬 潤, Fukuzawa Koji, Kiuchi Kunihiko, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 今田 宙志, 末廣 英也, 永松 裕一, 秋田 朋己, Hirata Ken-ichi

  カテーテルアブレーション関連大会2017, Jul. 2017, Japanese, 日本不整脈心電学会, 札幌, Domestic conference

  Oral presentation


• 左室心外膜側にspotty な不整脈器質を 同定しアブレーションに成功した 心サルコイドーシスの1例

  今田 宙志, Fukuzawa Koji, Kiuchi Kunihiko, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 黒瀬 潤, 永松 裕一, 末廣 英也, 秋田 朋己, Hirata Ken-ichi

  カテーテルアブレーション関連大会2017, Jul. 2017, Japanese, 日本不整脈心電学会, 札幌, Domestic conference

  Oral presentation


• Extracardiac compression of the inferolatral branch of the coronary vein by the descending aorta in a case with dilated cardiomyopathy

  小西 弘樹, Fukuzawa Koji, Kiuchi Kunihiko, Mori Shunpei, Hirata Ken-ichi

  The Heart Rhythm Society's 38th Annual Scientific Sessions, May 2017, English, Heart Rhythm Society, シカゴ, アメリカ, International conference

  Poster presentation


• Distribution of inflammation immediately after cryoballoon ablation in patient with atrial fibrillation

  Kiuchi Kunihiko, Fukuzawa Koji, Mori Shunpei, 西井 達矢, 渡邊 慶明, Hirata Ken-ichi

  The Heart Rhythm Society's 38th Annual Scientific Sessions, May 2017, English, Heart Rhythm Society, シカゴ, アメリカ, International conference

  Poster presentation


• When Should We Perform the Delayed-Enhancement MRI for Visualizing the Lesion after the Cryo-balloon Ablation?

  黒瀬 潤, Kiuchi Kunihiko, Fukuzawa Koji, Mori Shunpei, 伊澤 有, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 今田 宙志, 末廣英也, 永松裕一, 秋田朋己, Hirata Ken-ichi, Nishii Tatsuya, 河野 敦, 根宜 典行, 京谷 勉輔

  The 81th Annual Scientific Meeting of the Japanese Circulation Society, Mar. 2017, English, The Japanese Circulation Society, 金沢, Domestic conference

  Poster presentation


• The Impact of Left Axis Deviation in Patients with Left Bundle Brunch Block on the Response to Cardiac Resynchronization Therapy

  末廣 英也, Fukuzawa Koji, Kiuchi Kunihiko, 市堀 博俊, 小西 弘樹, 兵庫 聖大, 今田 宙志, 黒瀬 潤, 秋田 朋己, 永松 裕一, Hirata Ken-ichi

  The 81th Annual Scientific Meeting of the Japanese Circulation Society, Mar. 2017, English, The Japanese Circulation Society, 金沢, Backgrounds: Patients with left bundle block (LBBB) derive great benefits from cardiac resynchronization therapy (CRT), however, some obtain little or no benefit. LBBB is diagnosed by conventional criteria but it contains some variables, such as axis devi, Domestic conference

  Poster presentation


• The Difference of the Lesion Formation After Pulmonary Vein Isolation Using the Cryoballoon and the Conventional Radiofrequency Ablation  DE-MRI Analysis

  黒瀬 潤, Kiuchi Kunihiko, Fukuzawa Koji, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 今田 宙志, 末廣英也, 永松裕一, 秋田朋己, Hirata Ken-ichi, Nishii Tatsuya, 河野 敦, 根宜 典行, 京谷 勉輔

  The 81th Annual Scientific Meeting of the Japanese Circulation Society, Mar. 2017, English, The Japanese Circulation Society, 金沢, Domestic conference

  Poster presentation


• DE-MRI guided catheter ablation

  Kiuchi Kunihiko, Fukuzawa Koji, Mori Shunpei, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 今田 宙志, 黒瀬 潤, 末廣英也, 永松裕一, 秋田朋己, Hirata Ken-ichi

  The 81th Annual Scientific Meeting of the Japanese Circulation Society, Mar. 2017, Japanese, The Japanese Circulation Society, 金沢, Domestic conference

  Public symposium


• Anatomical Feature of the Superior Epigastric Artery for Epicardial Ablation

  Yuichi Nagamatsu, Shumpei Mori, Fukuzawa Koji, Kiuchi Kunihiko, Hiroki Konishi, Hirotoshi Ichibori, Hiroshi Imada, Kiyohiro Hyogo, Jun Kurose, Hideya Suehiro, Tomomi Akita, Nishii Tatsuya, Kono Atsushi, Hirata Ken-ichi

  第83回日本循環器学会学術大会, Mar. 2017, English, 日本循環器学会, 金沢, Domestic conference

  Poster presentation


• Anatomical Feature of the Superior Epigastric Artery for Epicardial Ablation

  永松 裕一, Mori Shunpei, Fukuzawa Koji, Kiuchi Kunihiko, 藤原 征, 小西 弘樹, 市堀 博俊, 今田 宙志, 兵庫 聖大, 黒瀬 潤, 伊澤 有, 末廣 英也, 秋田 朋己, Nishii Tatsuya, Kono Atsushi, Hirata Ken-ichi

  The 81th Annual Scientific Meeting of the Japanese Circulation Society, Mar. 2017, Japanese, The Japanese Circulation Society, 金沢, Domestic conference

  Poster presentation


• 透視では確認できないシリコン被膜が残存し、2回のリード抜去を要した後に開胸にて摘出となったデバイス感染の一例

  市堀 博俊, Fukuzawa Koji, Kiuchi Kunihiko, 小西 弘樹, 兵庫 聖大, 今田 宙志, 黒瀬 潤, 秋田 朋己, 末廣 英也, 永松 裕一, Matsumoto Kensuke, Mori Shunpei, Hirata Ken-ichi, Nishii Tatsuya, 山田 貴之

  The 9th implantable cardiac device winter conference, Feb. 2017, Japanese, The Japanese Heart Rhythm Society, 大阪, Domestic conference

  Oral presentation


• 劇症型心筋炎による心室細動症例にWCDを使用した1例

  黒瀬 潤, Fukuzawa Koji, Kiuchi Kunihiko, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 今田 宙志, 末廣 英也, 永松 裕一, 秋田 朋己, Hirata Ken-ichi

  The 9th implantable cardiac device winter conference, Feb. 2017, Japanese, The Japanese Heart Rhythm Society, 大阪, Domestic conference

  Oral presentation


• 両大血管右室起始症、上下心、二心腔修復術後遠隔期に心室頻拍と左室流出路狭窄が出現し、治療法選択に迷った1例

  Matsumoto Kensuke, 城戸 佐知子, 須藤 麻貴子, 郡山 恵子, Fukuzawa Koji, 山口 眞弘, 伊藤 光哲, 山城 荒平, Hirata Ken-ichi

  The 9th annual meeting of Japanese society for adult congenital heart disease, Jan. 2017, Japanese, Japanese Society of Adult Congenital Heart Disease, 津, 36 years old male with previous history of intracardiac surgery for double outlet right ventricule was reffered to our hospital because of ventricular tachycardia. Because the control of ventricular tachycardia was quite difficult, he underwent catheter a, Domestic conference

  Poster presentation


• 透視では確認できないシリコン被膜が残存し、2回のリード抜去を要した後に開胸にて摘出となったデバイス感染の一例

  市堀 博俊, Fukuzawa Koji, Kiuchi Kunihiko, 小西 弘樹, 兵庫 聖大, 今田 宙志, 黒瀬 潤, 秋田 朋己, 末廣 英也, 永松 裕一, Matsumoto Kensuke, Mori Shunpei, Hirata Ken-ichi, Nishii Tatsuya, 山田 貴之

  第122回日本循環器学会近畿地方会, Nov. 2016, Japanese, The Japanese Circulation Society, 大阪, Domestic conference

  Oral presentation


• 術前CTによる穿刺シミュレーションが安全な心外膜VTアブレーションに有用であった一例

  永松 裕一, Fukuzawa Koji, Mori Shunpei, Kiuchi Kunihiko, 小西 弘樹, 市堀 博俊, 今田 宙志, 兵庫 聖大, 黒瀬 潤, 末廣 英也, 秋田 朋己, Nishii Tatsuya, Hirata Ken-ichi

  第122回日本循環器学会近畿地方会, Nov. 2016, Japanese, The Japanese Circulation Society, 大阪, Domestic conference

  Oral presentation


• 下行大動脈が左室基部側下側壁を拡張期に圧迫しCRTD左室リード留置標的血管の扁平化を認めた一例

  小西弘樹, Fukuzawa Koji, Mori Shunpei, Kiuchi Kunihiko, 市堀博俊, 兵庫聖大, 今田宙志, 黒瀬 潤, 末廣英也, 永松裕一, 秋田朋己, Hirata Ken-ichi

  第124回日本循環器学会近畿地方会, Nov. 2016, Japanese, The Japanese Circulation Society, 大阪, Domestic conference

  Poster presentation


• Lesion formation after pulmonary vein isolation using the cryoballoon and the conventional radiofrequency ablation: Delayed-enhancement MRI analysis

  黒瀬 潤, Kiuchi Kunihiko, Fukuzawa Koji, 松本晃典, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 今田 宙志, Hirata Ken-ichi

  第122回日本循環器学会近畿地方会, Nov. 2016, Japanese, The Japanese Circulation Society, 大阪, Domestic conference

  Oral presentation


• Narrow QRS でHis近傍にexitがあるため、診断と治療に苦慮した、心サルコイドーシスによる心室頻拍の1例

  今田 宙志, Fukuzawa Koji, Kiuchi Kunihiko, 小西弘樹, 市堀博俊, 兵庫聖大, 黒瀬潤, 永松裕一, 末廣 英也, 秋田 朋己, 松本晃典, 吉田明弘, Hirata Ken-ichi

  カテーテルアブレーション関連大会2016, Oct. 2016, Japanese, The Japanese Heart Rhythm Society, 福岡, Domestic conference

  Oral presentation


• The relation between blood glucose fluctuation and arrhythmia in patients with type 1 diabetes mellitus

  兵庫聖大, Fukuzawa Koji, Kiuchi Kunihiko, 小西 弘樹, 市堀 博俊, 今田 宙志, 黒瀬 潤, Hirata Ken-ichi

  Annual Meeting of the Japanese Heart Rhythm Society 2016, Jul. 2016, Japanese, The Japanese Heart Rhythm Society, 札幌, Domestic conference

  Oral presentation


• The dilated superior vena cava associating with arrhythmogenic activity in patients with atrial fibrillation

  今田 宙志, Fukuzawa Koji, Kiuchi Kunihiko, 小西 弘樹, 市堀 博俊, 兵庫聖大, 黒瀬 潤, Hirata Ken-ichi

  Annual Meeting of the Japanese Heart Rhythm Society 2016, Jul. 2016, Japanese, The Japanese Heart Rhythm Society, 札幌, Domestic conference

  Oral presentation


• Radiofrequency Catheter Ablation for Drug Refractory Electrical Storm of Monomorphic Ventricular Tachycardia Targeting Arrhythmogenic Substrate

  Fukuzawa Koji, Kiuchi Kunihiko, 松本晃典, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 今田 宙志, 黒瀬 潤, Hirata Ken-ichi

  Annual Meeting of the Japanese Heart Rhythm Society 2021, Jul. 2016, English, The Japanese Heart Rhythm Society, 札幌, Domestic conference

  Oral presentation


• Quantitative analysis of Isolation Area and Rhythm Outcome after Pulmonary Vein Isolation including Selected CFAE Area around Pulmonary Vein in Patient with Persistent Atrial Fibrillation

  Kiuchi Kunihiko, Fukuzawa Koji, 松本晃典, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 今田 宙志, 黒瀬 潤, Hirata Ken-ichi

  Annual Meeting of the Japanese Heart Rhythm Society 2016, Jul. 2016, Japanese, The Japanese Heart Rhythm Society, 札幌, Domestic conference

  Poster presentation


• Pulmonary vein isolation without pulmonary venography

  黒瀬 潤, Fukuzawa Koji, Kiuchi Kunihiko, 松本晃典, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 今田 宙志, Hirata Ken-ichi

  Annual Meeting of the Japanese Heart Rhythm Society 2016, Jul. 2016, Japanese, The Japanese Heart Rhythm Society, 札幌, Domestic conference

  Poster presentation


• Predictors on Long-term Maintenance of Left Ventricular Reverse Remodeling in Respnders at 6 Months to Cardiac Resynchronization Therapy

  市堀 博俊, Fukuzawa Koji, Kiuchi Kunihiko, 松本晃典, 小西 弘樹, 兵庫 聖大, 今田 宙志, 黒瀬 潤, Hirata Ken-ichi

  Annual Meeting of the Japanese Heart Rhythm Society 2020, Jul. 2016, English, The Japanese Heart Rhythm Society, 札幌, Domestic conference

  Public symposium


• Lesion formation after pulmonary vein isolation using the cryoballoon and the conventional radiofrequency ablation: Delayed-enhancement MRI analysis

  黒瀬 潤, Kiuchi Kunihiko, Fukuzawa Koji, 松本晃典, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 今田 宙志, Hirata Ken-ichi

  Annual Meeting of the Japanese Heart Rhythm Society 2016, Jul. 2016, English, The Japanese Heart Rhythm Society, 札幌, Domestic conference

  Oral presentation


• Isolation area after Cryo-balloon ablation and cross-sectional area of pulmonary vein ostium

  Kiuchi Kunihiko, Fukuzawa Koji, 松本晃典, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 今田 宙志, 黒瀬 潤, Hirata Ken-ichi

  Annual Meeting of the Japanese Heart Rhythm Society 2016, Jul. 2016, Japanese, The Japanese Heart Rhythm Society, 札幌, Domestic conference

  Poster presentation


• Clinical Structural Anatomy of the Inferior Pyramidal Space Reconstructed from the Living Heart Using Multidetector-row Computed Tomography

  Mori Shunpei, Fukuzawa Koji, 高谷 具史, 伊藤 達郎, 鳥羽 敬義, 藤原 征, 渡邊 慶明, Nishii Tatsuya, Kono Atsushi, Hirata Ken-ichi

  JHRS 2016, Jul. 2016, English, Japanese Heart Rhythm Society, 札幌, Domestic conference

  Oral presentation


• case series of anti-mitochondrial antibody M2 associated cardiomyopathy

  小西 弘樹, Fukuzawa Koji, Kiuchi Kunihiko, 市堀 博俊, 兵庫 聖大, 今田 宙志, 黒瀬 潤, Hirata Ken-ichi

  Annual Meeting of the Japanese Heart Rhythm Society 2016, Jul. 2016, Japanese, The Japanese Heart Rhythm Society, 札幌, Domestic conference

  Poster presentation


• The effectiveness and the safety of epicardial radiofrequency catheter ablation for drug and endocardial ablation refractory ventricular tachycardia

  Hiroshi Imada, Fukuzawa Koji, Kiuchi Kunihiko, Akinori Matsumoto, Hiroki Konishi, Hirotoshi Ichibori, Kiyohiro Hyogo, Jun Kurose, Hirata Ken-ichi

  The 80th Annual Scientific Meeting of the Japanese Circulation Society, Mar. 2016, English, The Japanese Circulation Society, 仙台, Domestic conference

  Poster presentation


• The correlation between the area of complex fractionated atrial electrograms and the atrial defibrillation threshold in patients with persistent atrial fibrillation

  Akinori Matsumoto, Fukuzawa Koji, Kiuchi Kunihiko, Hiroki Konishi, Hirotoshi Ichibori, Kiyohiro Hyogo, Hiroshi Imada, Jun Kurose, Hirata Ken-ichi

  The 80th Annual Scientific Meeting of the Japanese Circulation Society, Mar. 2016, English, The Japanese Circulation Society, 仙台, Domestic conference

  Poster presentation


• Radiofrequency Catheter Ablation for Drug Refractory Electrical Storm of Monomorphic Ventricular Tachycardia in Patients with Structural Heart Disease

  Fukuzawa Koji, Kiuchi Kunihiko, Akinori Matsumoto, Hiroki Konishi, Hirotoshi Ichibori, Kiyohiro Hyogo, Hiroshi Imada, Jun Kurose, Hirata Ken-ichi

  The 80th Annual Scientific Meeting of the Japanese Circulation Society, Mar. 2016, English, The Japanese Circulation Society, 仙台, Domestic conference

  Oral presentation


• Long-term Maintenance of Left Ventricular Reverse Remodeling Achieved by Cardiac Resynchronization Therapy

  Hirotoshi Ichibori, Fukuzawa Koji, Kiuchi Kunihiko, Akinori Matsumoto, Hiroki Konishi, Kiyohiro Hyogo, Hiroshi Imada, Jun Kurose, Hirata Ken-ichi

  The 80th Annual Scientific Meeting of the Japanese Circulation Society, Mar. 2016, English, The Japanese Circulation Society, 仙台, Domestic conference

  Poster presentation


• Anti-mitochondrial M2 Antibody Positive is a Risk Factor for Atrial Arrhythmia with Impaired Hepatic Function

  Hiroki Konishi, Fukuzawa Koji, Kiuchi Kunihiko, Akinori Matsumoto, Hirotoshi Ichibori, Kiyohiro Hyogo, Hiroshi Imada, Jun Kurose, Hirata Ken-ichi

  The 80th Annual Scientific Meeting of the Japanese Circulation Society, Mar. 2016, English, The Japanese Circulation Society, 仙台, Domestic conference

  Oral presentation


• Anatomical dilatation of Superior Vena Cava (SVC) associated with an arrhythmogenic activity induced by SVC scan pacing

  Hiroshi Imada, Fukuzawa Koji, Kiuchi Kunihiko, Akinori Matsumoto, Hiroki Konishi, Hirotoshi Ichibori, Kiyohiro Hyogo, Jun Kurose, Hirata Ken-ichi

  The 80th Annual Scientific Meeting of the Japanese Circulation Society, Mar. 2016, English, The Japanese Circulation Society, 仙台, Domestic conference

  Poster presentation


• 修正大血管転位症例に心臓再同期療法を施行した1例

  黒瀬 潤, Fukuzawa Koji, Kiuchi Kunihiko, 松本 晃典, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 今田 宙志, Hirata Ken-ichi

  第8回植込みデバイス関連冬期大会 デバイス研究会, Feb. 2016, Japanese, Japanese Heart Rhythm Society, 小倉, Domestic conference

  Oral presentation


• リード断端が心房内に遺残し鼠径部より経皮的に抜去し得た一症例

  松本 晃典, Fukuzawa Koji, Kiuchi Kunihiko, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 今田 宙志, 黒瀬 潤, Hirata Ken-ichi

  第8回植込みデバイス関連冬期大会 デバイス研究会, Feb. 2016, Japanese, Japanese Heart Rhythm Society, 小倉, Domestic conference

  Poster presentation


• DDDペースメーカ留置後に頻回にspike on Tを来した1例

  小西 弘樹, Fukuzawa Koji, Kiuchi Kunihiko, 松本 晃典, 市堀 博俊, 兵庫 聖大, 今田 宙志, 黒瀬 潤, Hirata Ken-ichi

  第8回植込みデバイス関連冬期大会 デバイス研究会, Feb. 2016, Japanese, Japanese Heart Rhythm Society, 小倉, Domestic conference

  Oral presentation


• Left ventricular dyssynergy and dispersion as determinant factors of fatal ventricular arrhythmias in patients with mildly reduced ejection fraction

  Hiroki Matsuzoe, Tanaka Hidekazu, Matsumoto Kensuke, Kumiko Dokuni, Yutaka Hatani, Keiko Hatazawa, Hiromi Toki, Hiroyuki Shimoura, Junichi Ooka, Hiroyuki Sano, Takuma Sawa, Yoshiki Motoji, Yasuhide Mochizuki, Keiko Ryo, Fukuzawa Koji, Hirata Ken-ichi

  American Heart Association scientific session 2015, Nov. 2015, English, American Heart Association, Orland, USA, Background: Current guidelines recommend implantation of prophylactic implantable cardioverter-defibrillators (ICD) in patients with left ventricular (LV) ejection fraction (EF) <35%. We explored the prognostic factors of fatal ventricular arrhythmias for, International conference

  Poster presentation


• Increasing Stimulus Strength of Coronary Sinus Pacing Improved Left Ventricular Mechanical Dyssynchrony and Contractile Function in Patients with Reduced Ejection Fraction

  Kazuhiro Tatsumi, Tanaka Hidekazu, Matsumoto Kensuke, Dokuni Kumiko, Yutaka Hatani, Keiko Hatazawa, Hiroaki Matsuzoe, Junichi Ooka, Hiroyuki Sano, Hiroyuki Shimoura, Takuma Sawa, Yoshiki Motoji, Yasuhide Mochizuki, Keiko Ryo, Fukuzawa Koji

  American Heart Association scientific session 2015, Nov. 2015, English, American Heart Association, Orland, USA, Introduction: Increasing stimulus strength of left ventricular (LV) coronary sinus pacing decreases QRS duration and inter-ventricular conduction time. Hypothesis: Increasing stimulus strength of LV coronary sinus pacing improves LV mechanical dyssynchron, International conference

  Poster presentation


• A novel mapping technique detecting the residual gap after wide circular pulmonary vein isolation

  Kiuchi Kunihiko, Fukuzawa Koji, Akinori Matsumoto, Hiroki Konishi, Hirotoshi Ichibori, Kiyohiro Hyogo, Hiroshi Imada, Jun Kurose, Hirata Ken-ichi

  8th ASIA PACIFIC HEART RHYTHM SOCIETY SCIENTIFIC SESSIONS, Nov. 2015, English, ASIA PCIFIC HEART RHYTHM SOCIETY, MELBOURNE, AUSTRALIA, International conference

  Oral presentation


• ADVERSE EFFECTS ON PACING THRESHOLD OF CARDIAC PACEMAKER AFTER EXTERNAL CARDIOVERSION

  Hiroki Konishi, Kiuchi Kunihiko, Fukuzawa Koji, Akinori Matsumoto, Hirotoshi Ichibori, Kiyohiro Hyogo, Hiroshi Imada, Jun Kurose, Hirata Ken-ichi, Tomoyuki Nakanishi, Hiroki Shimizu, Yoshio Onishi

  8th ASIA PACIFIC HEART RHYTHM SOCIETY SCIENTIFIC SESSIONS, Nov. 2015, English, ASIA PCIFIC HEART RHYTHM SOCIETY, MELBOURNE, AUSTRALIA, International conference

  Poster presentation


• 右房－右肺静脈間の電気的伝導を証明し得た発作性心房細動の一例

  市堀 博俊, 吉田 明弘, Fukuzawa Koji, Kiuchi Kunihiko, 松本 晃典, 小西 弘樹, 今田 宙志, 兵庫 聖大, 黒瀬 潤, Hirata Ken-ichi

  カテーテルアブレーション関連秋季大会2015, Oct. 2015, Japanese, 日本不整脈学会, 福島, Domestic conference

  Oral presentation


• Functional Pace-map Responseにより心外膜面に複数のＶＴ回路を同定しアブレーションに成功した心筋炎後心筋症の1例

  今田 宙志, Fukuzawa Koji, Kiuchi Kunihiko, 松本 晃典, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 黒瀬 潤, Hirata Ken-ichi

  カテーテルアブレーション関連秋季大会 2015, Oct. 2015, Japanese, 日本不整脈学会, 福島, Domestic conference

  Oral presentation


• The Efficacy of Atrial Fibrillation Ablation on the Cardiac Function in Patients with Depressed Ejection Fraction

  小西 弘樹, Fukuzawa Koji, 吉田 明弘, 中西 智之, 山下 宗一郎, 松本 晃典, 市堀 博俊, 兵庫 聖大, 今田 宙志, Hirata Ken-ichi

  第30回日本不整脈学会/第32回日本心電学会 合同学術集会, Jul. 2015, Japanese, 日本不整脈学会/日本心電学会, 京都, Domestic conference

  Oral presentation


• The effectiveness and the safety of epicardial radiofrequency catheter ablation for ventricular tachycardia refractory to endocardial catheter ablation

  今田 宙志, Fukuzawa Koji, Kiuchi Kunihiko, 松本 晃典, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 黒瀬 潤, Hirata Ken-ichi

  第30回日本不整脈学会/第32回日本心電学会 合同学術集会, Jul. 2015, Japanese, 日本不整脈学会/日本心電学会, 京都, Domestic conference

  Oral presentation


• Stroke prevention and bleeding complications among warfarin,dabigatran,rivaroxaban and apixaban in patients undergoing AF ablation.

  兵庫 聖大, Fukuzawa Koji, Kiuchi Kunihiko, 松本 晃典, 小西 弘樹, 市掘 博俊, 今田 宙志, 黒瀬 潤, Hirata Ken-ichi

  第30回日本不整脈学会/第32回日本心電学会 合同学術集会, Jul. 2015, Japanese, 日本不整脈学会/日本心電学会, 京都, Domestic conference

  Oral presentation


• Relationship between J wave and ventricular fibrillation caused by coronary spastic angina

  松本 晃典, Fukuzawa Koji, Kiuchi Kunihiko, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 今田 宙志, 黒瀬 潤, Hirata Ken-ichi

  第30回日本不整脈学会/第32回日本心電学会 合同学術集会, Jul. 2015, Japanese, 日本不整脈学会/日本心電学会, 京都, Domestic conference

  Oral presentation


• Radiofrequency Catheter Ablation for Electrical Storm of Ventricular Tachycardiain Structural Heart Disease

  Fukuzawa Koji, Kiuchi Kunihiko, 松本晃典, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 今田 宙志, 黒瀬 潤, Hirata Ken-ichi

  第30回日本不整脈学会/第32回日本心電学会 合同学術集会, Jul. 2015, Japanese, 日本不整脈学会/日本心電学会, 京都, Domestic conference

  Public symposium


• Investigation on the prevalence rate of atrial tachyarrhythmia in patients with anti-mitochondrial M2 antibody

  小西 弘樹, Fukuzawa Koji, 吉田 明弘, 中西 智之, 山下 宗一郎, 松本 晃典, 市堀 博俊, 兵庫 聖大, 今田 宙志, Hirata Ken-ichi

  第30回日本不整脈学会/第32回日本心電学会 合同学術集会, Jul. 2015, Japanese, 日本不整脈学会/日本心電学会, 京都, Domestic conference

  Oral presentation


• A strain rate for the assessment of myocardial repolarization time; using two-dimensional speckle-tracking study.

  山下 宗一郎, Fukuzawa Koji, 吉田 明弘, 中西 智之, 松本 晃典, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 今田 宙志, Hirata Ken-ichi

  第30回日本不整脈学会/第32回日本心電学会 合同学術集会, Jul. 2015, Japanese, 日本不整脈学会/日本心電学会, 京都, Domestic conference

  Oral presentation


• Upper limit of vulnerability during defibrillator implantations predicts the occurrence of an appropriate shock therapy in Brugada patients.

  山下 宗一郎, Fukuzawa Koji, 吉田 明弘, 中西 智之, 松本 晃典, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 今田 宙志, Hirata Ken-ichi

  第79回日本循環器学会, Apr. 2015, English, 日本循環器学会, 大阪, Domestic conference

  Oral presentation


• Global Right Atrial Entrainment Mapping during Typical Atrial Flutter: Is the Crista Terminalis Block Line or Course of Reentry Circuits?

  中西 智之, Fukuzawa Koji, 吉田 明弘, 山下 宗一郎, 松本 晃典, 小西 弘樹, 市堀 博俊, 兵庫 聖大, 今田 宙志, Hirata Ken-ichi

  第79回日本循環器学会, Apr. 2015, Japanese, 日本循環器学会, 大阪, Domestic conference

  Oral presentation


• Circulating intermediate CD14++CD16+ monocytes increase in patients with atrial fibrillation and reflect functional remodeling of left atrium

  Atsushi Suzuki, Fukuzawa Koji, Yamashita Tomoya, Yoshida Akihiro, Sasaki Naoto, Takuo Emoto, Asumi Takei, Ryudo Fujiwara, Tomoyuki Nakanishi, Soichiro Yamashita, Akinori Matsumoto, Hiroki Konishi, Hirotoshi Ichibori, Hirata Ken-ichi

  64th Annual Scientific Session, American College of Cardiology, Mar. 2015, English, American College of Cardiology, San Diego, USA, Background: Recent large clinical study demonstrated association of intermediate CD14++CD16+monocytes (IM) with cardiovascular events. We investigated the possible role of IM in pathophysiology of atrial fibrillation (AF). Methods: This case-control study included 30 AF patients (17 paroxysmal and 13 persistent AF patients) who were referred for catheter ablation, and 30 health, International conference

  Poster presentation


• 急性心筋炎に合併した心室頻拍の治療方針決定に、着用型自動除細動器（WCD:Wearable Cardioverter Defibrillator）が有用であった1例

  今田宙志, Fukuzawa Koji, Yoshida Akihiro, 中西智之, 山下宗一郎, 松本晃典, 小西弘樹, 市堀博俊, 兵庫聖大, Hirata Ken-ichi

  第7回植込みデバイス関連冬季大会, Feb. 2015, Japanese, 日本不整脈学会, 東京, Domestic conference

  Poster presentation


• Glenn手術既往のある心室品拍患者に対して、心外膜にICDリードを留置した1例

  小西弘樹, Fukuzawa Koji, Yoshida Akihiro, 中西智之, 山下宗一郎, 松本晃典, 市堀博俊, 兵庫聖大, 今田宙志, Matsumoto Kensuke, Tanaka Hidekazu, Hirata Ken-ichi, Inoue Takeshi, Okita Yutaka

  第7回植込みデバイス関連冬季大会, Feb. 2015, Japanese, 日本不整脈学会, 東京, Domestic conference

  Oral presentation


• 心室筋深層起源の心室頻拍に対してBi-polar ablationが有用であった1例

  Fukuzawa Koji, Yoshida Akihiro, 小西弘樹, 中西智之, 山下宗一郎, 松本晃典, 市堀博俊, 兵庫聖大, 今田宙志, Hirata Ken-ichi

  日本不整脈学会カテーテルアブレーション関連秋季大会2014, Oct. 2014, Japanese, 日本不整脈学会, 新潟, Domestic conference

  Oral presentation


• Relationship between J wave and ventricular fibrillation caused by coronary spastic angina

  Akinori Matsumoto, Yoshida Akihiro, Fukuzawa Koji, Ryudo Fujiwara, Atsushi Suzuki, Tomoyuki Nakanishi, Soichiro Yamashita, Akinori Matsumoto, Hiroki Konishi, Hirotishi Ichibori, Hirata Ken-ichi

  ESC CONGRESS 2014, Sep. 2014, English, ESC CONGRESS 2014, Barcelona, Spain, International conference

  Poster presentation


• Glenn手術既往のある心室品拍患者に対して、心外膜にICDリードを留置した1例

  小西弘樹, Fukuzawa Koji, Yoshida Akihiro, Matsumoto Kensuke, 藤原竜童, 鈴木敦, 中西智之, 山下宗一郎, 松本晃典, 市堀博俊, Yamashita Tomoya, Takaya Tomofumi, Hirata Ken-ichi, Inoue Takeshi, Okita Yutaka

  第117回日本循環器学会近畿地方会, Jul. 2014, Japanese, 日本循環器学会近畿支部, 大阪, Domestic conference

  Oral presentation


• Deterioration phenomenon of cardiac function in responder patients with cardiac resynchronization therapy

  Hirotoshi Ichibori, Yoshida Akihiro, Fukuzawa Koji, Ryudo Fujiwara, Atsushi Suzuki, Tomoyuki Nakanishi, Soichiro Yamashita, Akinori Matsumoto, Hiroki Konishi, Hirata Ken-ichi

  Japan Heart Rhythm Society, Jul. 2014, Japanese, 日本不整脈学会, Tokyo, Japan, Introduction: It has been recently demonstrated that cardiac resynchronization therapy(CRT) improves systolic dysfunction and this improvement persists in the long term. However, in spite of responder, in some cases LV function gradually deteriorated during long-term follow-up.Methods: A total of 36 consecutive CRT responder patients in whom left ventricular end-systolic volume, Domestic conference

  Oral presentation


• Anti-mitochondrial M2 Antibody is a Risk of Atrial Arrhythmia

  小西弘樹, Yoshida Akihiro, Fukuzawa Koji, 藤原竜童, 鈴木敦, 中西智之, 山下宗一郎, 松本晃典, 市堀博俊, Hirata Ken-ichi

  第29回日本不整脈学会, Jul. 2014, Japanese, 日本不整脈学会, 東京, Domestic conference

  Oral presentation


• The relationship between cardiac vunlerability and dynamics of action potential duration

  山下 宗一郎, Yoshida Akihiro, Fukuzawa Koji, 藤原 竜童, 鈴木 敦, 中西 智之, 松本 晃典, 小西 弘樹, 市堀 博俊, Hirata Ken-ichi

  The 78th Scientific Meeting of the Japanese Circulation Society, Mar. 2014, English, Japanese Circulation Society, 東京, Domestic conference

  Poster presentation


• Relationship between J wave and Ventricular fibrillation Caused by coronary spastic angina

  松本 晃典, Yoshida Akihiro, Fukuzawa Koji, 藤原 竜童, 鈴木 敦, 中西 智之, 山下 宗一郎, 小西 弘樹, 市堀 博俊, Hirata Ken-ichi

  The 78th Scientific Meeting of the Japanese Circulation Society, Mar. 2014, English, Japanese Circulation Society, 東京, Domestic conference

  Poster presentation


• Rescue catheter ablation for electrical storm (ES) due to ventricular tachycardia (VT) can reduce VT and ES recurrence in patients with non-ischemic cardiomyopathy

  Atsushi Suzuki, Yoshida Akihiro, Fukuzawa Koji, Ryudo Fujiwara, Tomoyuki Nakanishi, Soichiro Yamashita, Akinori Matsumoto, Hiroki Konishi, Toshiyuki Ichibori, Hirata Ken-ichi, Akira Shimane, Kunihiko Kiuchi, Katsunori Okajima

  AHA Scientific Sessions 2013, Nov. 2013, English, American Heart Association, Dallas, Texas, USA, International conference

  Poster presentation


• 肺静脈隔離後の短周期のCFAEに対するアブレーションは心房細動の再発率を減少させる

  中西 智之, Yoshida Akihiro, Fukuzawa Koji, 藤原 竜童, 鈴木 敦, 山下 宗一郎, 松本 晃典, 小西 弘樹, 市堀 博俊, Hirata Ken-ichi

  The 30th Annual meeting of the Japanese Society of Electrocardiography, Oct. 2013, Japanese, the Japanese Society of Electrocardiography, 青森, Domestic conference

  Oral presentation


• 順伝導fast pathwayの頻拍回路への関与を検討し得たfast/slow AVNRTの2例

  藤原 竜童, Yoshida Akihiro, Fukuzawa Koji, 松本 晃典, 鈴木 敦, 中西 智之, 山下 宗一郎, 小西 弘樹, 市堀 博俊, Hirata Ken-ichi

  The 30th Annual meeting of the Japanese Society of Electrocardiography, Oct. 2013, Japanese, the Japanese Society of Electrocardiography, 青森, Domestic conference

  Oral presentation


• QT延長症候群2型の遺伝子異常とQT延長症候群1型の一塩基多型を認め意識消失を繰り返した一例

  松本 晃典, Yoshida Akihiro, Fukuzawa Koji, 藤原 竜童, 鈴木 敦, 中西 智之, 山下 宗一郎, 小西 弘樹, 市堀 博俊, Hirata Ken-ichi

  The 30th Annual meeting of the Japanese Society of Electrocardiography, Oct. 2013, Japanese, the Japanese Society of Electrocardiography, 青森, Domestic conference

  Oral presentation


• The effectiveness of cardiac resynchronization therapy for New York Heart Association class IV non-ambulatory heart failure patients

  山下 宗一郎, Fukuzawa Koji, 藤原 竜童, 鈴木 敦, 中西 智之, 松本 晃典, 小西 弘樹, 市堀 博俊, Yoshida Akihiro, Hirata Ken-ichi

  The 28th Annual meeting of the Japanese Heart Rhythm Society, Jul. 2013, English, the Japanese Heart Rhythm Society, 東京, Domestic conference

  Oral presentation


• The Relationship between Inducibility of Atrial Tachyarrhythmia and Clinical Outcome after Pulmonary Vein Isolation in Patients with non-Paroxysmal Atrial Fibrillation

  Tomoyuki Nakanishi, Yoshida Akihiro, Asumi Takei, Fukuzawa Koji, Kimitake Imamura, Mitsuaki Itoh, Ryudo Fujiwara, Atsushi Suzuki, Soichiro Yamashita, Akinori Matsumoto, Hirata Ken-ichi

  The 77th Annual Scientific Meeting of The Japanese Circulation Society, Mar. 2013, Japanese, The Japanese Circulation Society, 横浜, Objectives: This study investigated the relationship between inducibility of atrial tachyarrhythmia after extensive encircling pulmonary vein isolation (EEPVI) in patient with non-Paroxysmal atrial fibrillation (non-PAF) and clinical outcome. Methods: In 89 patients with persistent AF (n=63) or longstanding AF (n=26) who underwent EEPVI, inducibility of atrial tachyarrhythmia w, Domestic conference

  Poster presentation


• Rescue Catheter Ablation for Electrical Storm due to Ventricular Tachycardia in Patients with Non-ischemic Cardiomyopathy

  鈴木 敦, Yoshida Akihiro, 武居 明日美, Fukuzawa Koji, 木内 邦彦, 伊藤 光哲, 今村公威, 藤原 竜童, 中西 智之, 山下 宗一郎, 松本 晃典, Hirata Ken-ichi

  The 77th Annual Scientific Meeting of the Japanese Circulation Society, Mar. 2013, English, the Japanese Circulation Society, 横浜, Aims: In non-ischemic cardiomyopathy (NICM) patients, the efficacy of catheter ablation (CA) for electrical storm (ES) is still unknown. We assessed the efficacy of rescue CA for ES in NICM patients. Methods: Twenty-one patients with implantable cardioverter defibrillator and subsequent ES were retrospectively analyzed. We compared the clinical outcome of patients undergoing re, International conference

  Poster presentation


• Functional Complex Fractionated Atrial Electrograms not to be Targeted in Patients with Non- paroxysmal Atrial Fibrillation

  Akinori Matsumoto, Yoshida Akihiro, Fukuzawa Koji, Asumi Takei, Kimitake Imamura, Mitsuaki Itoh, Ryudo Fujiwara, Atsushi Suzuki, Tomoyuki Nakanishi, Souichiro Yamashita, Hirata Ken-ichi

  The77th anuual scientific meeting of the Japanese circulation society, Mar. 2013, Japanese, he Japanese circulation society, 横浜, International conference

  Poster presentation


• Clinical impact of left ventricle lead positioning in the electrical and mechanical latest site in patients with cardiac resynchronization therapy

  藤原 竜童, Yoshida Akihiro, Fukuzawa Koji, 伊藤 光哲, 今村 公威, 鈴木 敦, 中西 智之, 山下 宗一郎, 松本 晃教, Hirata Ken-ichi

  The 77th Annual Scientific Meeting of The Japanese Circulation Society, Mar. 2013, English, 日本循環器学会, 横浜, Domestic conference

  Oral presentation


• Visualization of the antegrade slow and fast pathway input using 3D electro-anatomical mapping system in the patients with AVNRT

  鈴木 敦, Yoshida Akihiro, 武居 明日美, Fukuzawa Koji, 木内 邦彦, 伊藤 光哲, 今村公威, 藤原 竜童, 中西 智之, 山下 宗一郎, 松本 晃典, Hirata Ken-ichi

  AHA Scientific Sessions 2012, Nov. 2012, English, American Heart Association, ロサンゼルス, Background: The mapping of the exact site of the antegrade slow pathway (A-SP) and antegrade fast pathway (A-FP) input location have not been well described although the anatomical location of them described in previous reports. Methods: In 23 patients with slow-fast atrioventricular nodal reentrant tachycardia (SF-AVNRT), entrainment pacing during SF-AVNRT and pacing at 10 bea, International conference

  Poster presentation


• Prediction of response to cardiac resynchronization therapy using improvement of coronary flow reserve in patients with non-ischemic cardiomyopathy

  伊藤 光哲, Yoshida Akihiro, 武居 明日美, Fukuzawa Koji, 木内 邦彦

  -, Nov. 2012, English, American Heart Association, ロサンゼルス, International conference

  Poster presentation


• 当院での冠攣縮性狭心症患者におけるJ波と心室細動の関連の検討

  松本 晃典, Yoshida Akihiro, 武居 明日美, Fukuzawa Koji, 伊藤 光哲, 今村 公威, 藤原 竜童, 鈴木 敦, 中西 智之, 山下 宗一郎, Hirata Ken-ichi

  The29th anuual scientific meeting of the Japanese society of Electrocardiology, Oct. 2012, Japanese, he Japanese society of Electrocardiology, 千葉, Domestic conference

  Oral presentation


• 冠攣縮とJ波の経時的変化が観察された心肺蘇生後の一例

  鈴木 敦, Yoshida Akihiro, 武居 明日美, Fukuzawa Koji, 木内 邦彦, 伊藤 光哲, 今村公威, 藤原 竜童, 中西 智之, 山下 宗一郎, 松本 晃典, Hirata Ken-ichi

  The 29th Annual Meeting of the Japanese Society of Electrocardiology, Oct. 2012, Japanese, the Japanese Society of Electrocardiology, 千葉, 症例は48歳男性。生来健康で通院歴はなかった。運動中（ハーフマラソン18ｋｍ地点）に意識を消失し転倒した。救護隊到着しAEDを装着したところ、心室細動を認めたため除細動・心肺蘇生が行われた。蘇生後、前医にて精査入院となった。12誘導心電図では、左室高電位と下壁および左側胸部誘導（II、III、aVF、V4-V6）にて0.1mVのJ波を認めたが、心エコー図検査では、致死的不整脈の原因となる器質的心疾患を認めなかった。冠動脈造影検査にて有意狭窄を認めず、アセチルコリン負荷にて左前下行枝近位および左回旋枝遠位に冠攣縮(90％狭窄)を認めたが、その際の12誘導心電図では有意なST変化を認めなかった。右冠動脈アセチルコリン負荷では、右冠動脈本幹に有意な冠攣縮を認めなかったが、ニトログリセリン投与中より下壁・左側胸部誘導でのJ波が消失し、右側胸部誘導（V1-V2, Domestic conference

  Oral presentation


• Relationship between coronary flow reserve and echocardiographic response after 7month of cardiac resynchronization therapy

  Mitsuaki Itoh, Yoshida Akihiro, Tshiro Shinke, Kozuki Amane, Asumi Takei, Fukuzawa Koji, Kaoru Takami, Satoko Tanaka, Mitsuru Takami, Kimitake Imamura, Ryudo Matsumoto, Atsushi Suzuki, Hirata Ken-ichi

  第75回日本循環器学会総会・学術集会, Aug. 2011, English, 日本循環器学会, 横浜, International conference

  Oral presentation


• Effect of cardiac resynchronization therapy on phasic coronary flow pattern in patients with non-ischemic cardiomyopathy

  Mitsuaki Itoh, Shinke Toshiro, Yoshida Akihiro, Kozuki Amane, Asumi Takei, Fukuzawa Koji, Kaoru Takami, Satoko Tanaka, Mitsuru Takami, Kimitake Imamura, Ryudo Matsumoto, Atsushi Suzuki, Hirata Ken-ichi

  第75回日本循環器学会総会・学術集会, Aug. 2011, English, 日本循環器学会, 横浜, International conference

  Oral presentation


• Effect of cardiac resynchronization therapy on coronary flow and microvascular resistance in patients with non-ischemic cardiomyopathy

  Mitsuaki Itoh, Shinke Toshiro, Yoshida Akihiro, Kozuki Amane, Asumi Takei, Fukuzawa Koji, Kaoru Takami, Satoko Tanaka, Mitsuru Takami, Kimitake Imamura, Ryudo Matsumoto, Atsushi Suzuki, Hirata Ken-ichi

  第75回日本循環器学会総会・学術集会, Aug. 2011, English, 日本循環器学会, 横浜, International conference

  Oral presentation


• 通常型心房粗動患者の後方ブロックラインにおけるnoncontact MappingのVirtual Unipolar電位波形とContact Bipolar電位波形の比較検討

  Yoshida Akihiro, Fukuzawa Koji, Hirata Kenichi

  第24回日本不整脈学会学術集会・第26回日本心電学会学術集会 合同学術集会, Jul. 2009, Japanese, 日本不整脈学会・日本心電学会, 京都, Domestic conference

  Oral presentation


• 心臓再同期療法におけるBeat-to-Beat QT dispersionによる再分極の時間的変化の検討

  Yoshida Akihiro, Fukuzawa Koji, Hirata Kenichi

  第24回日本不整脈学会学術集会・第26回日本心電学会学術集会 合同学術集会, Jul. 2009, Japanese, 日本不整脈学会・日本心電学会, 京都, Domestic conference

  Poster presentation


• 心室頻拍に対してのカテーテルアブレーションに成功した洞調律時心室内伝導障害を有する筋強直性ジストロフィーの一例

  Yoshida Akihiro, Fukuzawa Koji, Hirata Kenichi

  第24回日本不整脈学会学術集会・第26回日本心電学会学術集会 合同学術集会, Jul. 2009, Japanese, 日本不整脈学会・日本心電学会, 京都, Domestic conference

  Poster presentation


• 心外膜アブレーションにより救命できた右室心室頻拍ストームの1例

  Yoshida Akihiro, Fukuzawa Koji, Hirata Kenichi

  第24回日本不整脈学会学術集会・第26回日本心電学会学術集会 合同学術集会, Jul. 2009, Japanese, 日本不整脈学会・日本心電学会, 京都, Domestic conference

  Oral presentation


• Noncontact Mapping Systemを用いた通常型心房粗動患者の右房後壁の機能的ブロックラインに対するClassIc drug (ピルジカイニド)の影響

  Yoshida Akihiro, Fukuzawa Koji, Hirata Kenichi

  第24回日本不整脈学会学術集会・第26回日本心電学会学術集会 合同学術集会, Jul. 2009, Japanese, 日本不整脈学会・日本心電学会, 京都, Domestic conference

  Poster presentation


• Electro-anatomical mappingを用いたfast-pathwayの局在の検討

  Yoshida Akihiro, Fukuzawa Koji, Hirata Kenichi

  第24回日本不整脈学会学術集会・第26回日本心電学会学術集会 合同学術集会, Jul. 2009, Japanese, 日本不整脈学会・日本心電学会, 京都, Domestic conference

  Oral presentation


• Short-Coupled variant of Torsade de Pointesのelectrical stormに対しIkr遮断薬が著効した1例

  Yoshida Akihiro, Fukuzawa Koji, Hirata Kenichi

  第107回日本循環器学会近畿地方会, Jun. 2009, Japanese, 日本循環器学会, 大阪, Domestic conference

  Oral presentation


• Recognition of Dislocated Fast-Pathway by Three-Dimensional Electro-anatomical Mapping

  Yoshida Akihiro, Fukuzawa Koji, Hirata Kenichi

  Europace, Jun. 2009, English, Europace, ベルリン, ドイツ, International conference

  Poster presentation


• Pacing Rate-dependent and Site-specific Conduction Block at the Sinus Venosa Region Evaluated by Non-contact Mapping System in Patients with Typical Atrial Flutter

  Yoshida Akihiro, Fukuzawa Koji, Hirata Kenichi

  Europace, Jun. 2009, English, Europace, ベルリン, ドイツ, International conference

  Poster presentation


• Comparison of Virtual Unipolar Morphologies and Contact Bipolar Electrograms at the Posterior Block Line of Typical Atrial Flutter

  Yoshida Akihiro, Fukuzawa Koji, Hirata Kenichi

  Europace, Jun. 2009, English, Europace, ベルリン, ドイツ, International conference

  Poster presentation


• Quality of life and mood disturbance during the first year of patients with implantable cardioverter defibrillators

  齊藤 奈緒, 多留 ちえみ, 吉田 明弘, 福沢 公二, 高見 薫, 熊谷 寛之, 高見 充, 鳥井 聡子, 平田 健一, 塩谷 英之, 石川 雄一, 宮脇 郁子

  第17回アジア太平洋循環器学会, May 2009, English, International conference

  Oral presentation


• 2D speckle tracking法を用いた新しいストレイン指標は、心臓再同期療法におけるレスポンダーの規定因子となり得る

  Kawai Hiroya, Fukuzawa Koji, Yoshida Akihiro, Hirata Kenichi

  日本心エコー図学会 第20回学術集会, Apr. 2009, Japanese, 日本心エコー図学会, 高松, Domestic conference

  Oral presentation


• Three-Dimensional Electro-anatomical Mapping of Antegrade and Retrograde Fast Pathway

  Yoshida Akihiro, Fukuzawa Koji, Hirata Kenichi

  第73回日本循環器学会 総会, Mar. 2009, Japanese, 日本循環器学会, 大阪, Domestic conference

  Poster presentation


• Rescue Catheter Ablation for Electrical Storm of Monomorphic Ventricular Tachycardia in Implantable Cardioverter Defibrillator Recipients

  Fukuzawa Koji, Yoshida Akihiro, Hirata Kenichi

  第73回日本循環器学会 総会, Mar. 2009, Japanese, 日本循環器学会, 大阪, Domestic conference

  Poster presentation


• Rate-and Direction-dependent Conduction Block at the Sinus Venosa Region Evaluated by Non-contact Mapping in Patients with Typical Atrial Flutter

  Yoshida Akihiro, Fukuzawa Koji, Hirata Kenichi

  第73回日本循環器学会 総会, Mar. 2009, Japanese, 日本循環器学会, 大阪, Domestic conference

  Poster presentation


• Upper limit of vulnerabilityを用いた除細動閾値測定時のテストエネルギーの重要性

  Yoshida Akihiro, Fukuzawa Koji, Hirata Kenichi

  第１回デバイス関連冬季大会, Feb. 2009, Japanese, 日本不整脈学会, 東京, Domestic conference

  Oral presentation


• 心房粗動と非持続性心室頻拍を合併したファブリー病を原因とする拡張相肥大型心筋症の１例

  Fukuzawa Koji, Yoshida Akihiro, Kawai Hiroya, Hirata Kenichi

  第２５回日本心電学会学術集会, Nov. 2008, Japanese, 日本心電学会, 新潟, Domestic conference

  Poster presentation


• 心臓再同期療法を施行した心ファブリー病の一例

  Kawai Hiroya, Fukuzawa Koji, Ishida Tatsuro, Yoshida Akihiro, Hirata Kenichi

  日本心臓病学会 第56回学術集会, Sep. 2008, Japanese, 日本心臓病学会, 東京, Domestic conference

  Poster presentation


• 心臓再同期療法による局所拡張早期心筋機能の急性期反応は遠隔期左室収縮能改善を予測する

  Kawai Hiroya, Fukuzawa Koji, Yoshida Akihiro, Hirata Kenichi

  日本心臓病学会 第56回学術集会, Sep. 2008, Japanese, 日本心臓病学会, 東京, Domestic conference

  Oral presentation


• The upper turnover portion of the reentry circuit of typical and reverse typical atrial flutter

  Fukuzawa Koji, Yoshida Akihiro, Hirata Kenichi

  ESC Congress 2008欧州心臓学会, Aug. 2008, English, ヨーロッパ心臓病学会, ミュンヘン, ドイツ, International conference

  Oral presentation


• Optimal Shock Energy in Upper Limit of Vulnerability Testing for Defibrillator Implantation without Ventricular Fibrillation Induction

  Yoshida Akihiro, Fukuzawa Koji, Hirata Kenichi

  ESC Congress 2008欧州心臓学会, Aug. 2008, English, ヨーロッパ心臓病学会, ミュンヘン, ドイツ, International conference

  Poster presentation


• 心臓再同期療法を施行し術直後より左室拡張能の改善を認めた心ファブリー病の一例

  Fukuzawa Koji, Ishida Tatsuro, Yoshida Akihiro, Kawai Hiroya, Hirata Kenichi

  日本循環器学会 第105回近畿地方会, Jun. 2008, Japanese, 日本循環器学会, 大阪, Domestic conference

  Oral presentation


• Preserved Systolic Function in the Region of Left Ventricular Pacing Lead Predicts the Response to Cardiac Resynchronization Therapy in Patients with Heart Failure Assessed by Two-dimensional Speckle Tracking Echocardiography

  Kawai Hiroya, Fukuzawa Koji, Yoshida Akihiro, Hirata Kenichi

  The American Society of Echocardiography 19th Annual Scientific Sessions, Jun. 2008, English, American Society of Echocardiography, トロント, カナダ, International conference

  Poster presentation


• 心房細動患者に対する肺静脈隔離通電中の心拍数変動に関する検討

  Yoshida Akihiro, Fukuzawa Koji, Hirata Kenichi

  第23回 日本不整脈学会, May 2008, Japanese, 日本不整脈学会, 横浜, Domestic conference

  Poster presentation


• Upper limit of vulnerabilityを用いた除細動閾値測定時の至適shock energyの検討

  Yoshida Akihiro, Fukuzawa Koji, Hirata Kenichi

  第23回 日本不整脈学会, May 2008, Japanese, 日本不整脈学会, 横浜, Domestic conference

  Oral presentation


• Systolic Function in Resion of Left Ventricular Pacing Lead Predicts the Response to Cardiac Resynchronization Therapy

  Kawai Hiroya, Fukuzawa Koji, Yoshida Akihiro, Hirata Kenichi

  日本心エコー図学会 第19回学術集会, Apr. 2008, Japanese, 日本心エコー図学会, 神戸, Domestic conference

  Oral presentation


• The Upper Turnover Portion of the Reentry Circuit of Typical Atrial Flutter

  Fukuzawa Koji, Yoshida Akihiro, Hirata Kenichi

  第72回日本循環器学会総会・学術総会, Mar. 2008, Japanese, 日本循環器学会, 福岡, Domestic conference

  Poster presentation


• Influence of Cardiac Resynchronization Therapy on Temporal and Spatial Ventricular Repolarization in patients with Congestive Heart Failure

  Yoshida Akihiro, Fukuzawa Koji, Hirata Kenichi

  第72回日本循環器学会, Mar. 2008, Japanese, 日本循環器学会, 福岡, Domestic conference

  Poster presentation


• Changes of Spatial Atrial Fibrillatory Cycle Length during Atrial Fibrillation before and after Pulmonary Vein Isolation

  Yoshida Akihiro, Fukuzawa Koji, Hirata Kenichi

  第72回日本循環器学会, Mar. 2008, Japanese, 日本循環器学会, 福岡, Domestic conference

  Poster presentation


• Site Specific Transversal Conduction and Conduction Block at Posteromedial Right Atrium (Sinus Venosa Region) in Patients with Typical Atrial Flutter

  Fukuzawa Koji, Yoshida Akihiro, Yokoyama Mitsuhiro

  第７9回AmericanHeartAssociationScientificSession, Nov. 2007, English, The American Heart Association, Orland, アメリカ, International conference

  Poster presentation


• 不整脈の自覚症状に乏しいOMI後の植込み型除細動器（ICD）植込み患者における療養経験の変化

  Saitoh Nao, Yoshida Akihiro, Fukuzawa Koji, Shiotani Hideyuki, Hirata Kenichi, Miyawaki Ikuko

  第64回日本循環器心身医学会, Oct. 2007, Japanese, 日本循環器心身医学会, 東京, Domestic conference

  Poster presentation


• 右室流出路起源心室性不整脈（RVOT VPC/NSVT）Ablation におけるNon-contact Mappingの有用性

  Fukuzawa Koji, Yoshida Akihiro, Yokoyama Mitsuhiro

  第24回日本心電学会学術集会, Oct. 2007, Japanese, 日本心電学会、日本不整脈学会, 名古屋, Domestic conference

  Oral presentation


• Beat-to-Beat QT Dispersionを用いた両心室ペーシングにおける時間的空間的再分極変化の検討

  Yoshida Akihiro, Fukuzawa Koji, Yokoyama Mitsuhiro

  第24回日本心電学会学術集会, Oct. 2007, Japanese, 日本心電学会、日本不整脈学会, 名古屋, Domestic conference

  Oral presentation


• Transversal Conduction Capabilities of Posteromedial Right Atrium (Sinus Venosa Region) in Patients with Typical Atrial Flutter

  Fukuzawa Koji, Yoshida Akihiro, Yokoyama Mitsuhiro, Hirata Kenichi

  ESCcongress2007, Sep. 2007, English, ESC Congress, ビエナ, オーストリア, International conference

  Poster presentation

• 心房細動と炎症の関連を解明するための心房筋炎症免疫細胞の単一細胞遺伝子解析

  福沢 公二, 江本 拓央

  日本学術振興会, 科学研究費助成事業, 基盤研究(C), 神戸大学, 01 Apr. 2022 - 31 Mar. 2025


• 持続性心房細動における心房線維化ならびに局所的炎症部位への非薬物的治療の確立

  木内 邦彦

  学術研究助成基金助成金／基盤研究(C), Apr. 2018 - Mar. 2021

  Competitive research funding


• Impact of the Particle Irradiation on the Electrophysiological Changes of the Heart

  Takami Mitsuru, Fukuzawa Koji, Okimoto Tomoaki, Suga Masanari, Hara Tetsuya

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Young Scientists (B), Kobe University, 01 Apr. 2017 - 31 Mar. 2019

  We performed the particle beam irradiation for the rabbit's heart at Hyogo Iron Beam Medical Center. Regular follow-up examinations (ECG and echocardiography) were performed after the irradiation. At 3-6 months after the irradiation, we opened the chest under the general anesthesia and performed the electrophysiological study. After euthanization, we analyzed the histological changes. We could observed the skin color changes and the decrease of the voltage in the ECG during the follow-up. Electrophysiological study showed the prolongation of the conduction time, decreasing the conduction velocity and voltage in the epicardium. These results suggested that the particle beam could be applied to the treatment of the cardiac arrhythmia.


• 脂肪酸が不整脈と血栓形成に及ぼす影響の解明

  福沢 公二

  学術研究助成基金助成金／基盤研究(C), Apr. 2016 - Mar. 2019, Principal investigator

  Competitive research funding