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Yasuo Okumura

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Cardiac Electrophysiologic Techniques

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Masayoshi Kofune; Rikitake Kogawa; Hiroaki Mano; Koichi Nagashima; Toshiko Nakai; Mizuki Nikaido; Kimie Ohkubo; Yasuo Okumura; Naoko Sasaki; Kazumasa Sonoda; Ichiro Watanabe; Atsushi Hirayama
Comparative distribution of complex fractionated atrial electrograms, high dominant frequency (HDF) sites during atrial fibrillation and HDF sites during sinus rhythm.
Yasuo Okumura; Naoko Sasaki; Kazumasa Sonoda; Ichiro Watanabe; Masayoshi Kofune; Rikitake Kogawa; Hiroaki Mano; Ayako Maruyama; Koichi Nagashima; Toshiko Nakai; Kimie Ohkubo; Atsushi Hirayama
Effect of catheter tip-tissue surface contact on three-dimensional left atrial and pulmonary vein geometries: potential anatomic distortion of 3D ultrasound, fast anatomical mapping, and merged 3D CT-derived images.
Naoko Sasaki; Ichiro Watanabe; Yasuo Okumura; Atsushi Hirayama
Pulmonary vein remnant as a trigger site for atrial fibrillation.

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2013: Masayoshi Kofune; Rikitake Kogawa; Hiroaki Mano; Koichi Nagashima; Toshiko Nakai; Mizuki Nikaido; Kimie Ohkubo; Yasuo Okumura; Naoko Sasaki; Kazumasa Sonoda; Ichiro Watanabe; Atsushi Hirayama
Comparative distribution of complex fractionated atrial electrograms, high dominant frequency (HDF) sites during atrial fibrillation and HDF sites during sinus rhythm.
Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing 2013;36(3):297-306.
2013: Yasuo Okumura; Naoko Sasaki; Kazumasa Sonoda; Ichiro Watanabe; Masayoshi Kofune; Rikitake Kogawa; Hiroaki Mano; Ayako Maruyama; Koichi Nagashima; Toshiko Nakai; Kimie Ohkubo; Atsushi Hirayama
Effect of catheter tip-tissue surface contact on three-dimensional left atrial and pulmonary vein geometries: potential anatomic distortion of 3D ultrasound, fast anatomical mapping, and merged 3D CT-derived images.
Journal of cardiovascular electrophysiology 2013;24(3):259-66.
2013: Naoko Sasaki; Ichiro Watanabe; Yasuo Okumura; Atsushi Hirayama
Pulmonary vein remnant as a trigger site for atrial fibrillation.
Circulation journal : official journal of the Japanese Circulation Society 2013;77(2):494-6.
2012: Yasuo Okumura; Kazumasa Sonoda; Ichiro Watanabe; Masayoshi Kofune; Hiroaki Mano; Koichi Nagashima; Toshiko Nakai; Kimie Ohkubo; Atsushi Hirayama
Characteristics and distribution of complex fractionated atrial electrograms and the dominant frequency during atrial fibrillation: relationship to the response and outcome of circumferential pulmonary vein isolation.
Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing 2012;34(3):267-75.
2012: Koichi Nagashima; Toshiko Nakai; Mizuki Nikaido; Kimie Ohkubo; Yasuo Okumura; Kazumasa Sonoda; Ichiro Watanabe; Takafumi Hiro; Masayoshi Kofune; Hiroaki Mano; Atsushi Hirayama
Does location of epicardial adipose tissue correspond to endocardial high dominant frequency or complex fractionated atrial electrogram sites during atrial fibrillation?
Circulation. Arrhythmia and electrophysiology 2012;5(4):676-83.
2012: Koichi Nagashima; Toshiko Nakai; Kimie Ohkubo; Yasuo Okumura; Kazumasa Sonoda; Ichiro Watanabe; Masayoshi Kofune; Tatsuya Kofune; Hiroaki Mano; Atsushi Hirayama
Effects of inter-electrode spacing on complex fractionated atrial electrograms and dominant frequency detection.
Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing 2012;34(1):51-7.
2012: Kimie Ohkubo; Yasuo Okumura; Kazumasa Sonoda; Ichiro Watanabe; Yuji Kasamaki; Masayoshi Kofune; Hiroaki Mano; Koichi Nagashima; Toshiko Nakai; Atsushi Hirayama
Prevalence of prominent J waves in patients presenting with ventricular fibrillation without structural heart disease: a single-center study.
Journal of cardiology 2012;59(3):313-20.
2012: Ichiro Watanabe; Masayoshi Kofune; Rikitake Kogawa; Hiroaki Mano; Koichi Nagashima; Kimie Ohkubo; Yasuo Okumura; Naoko Sasaki; Kazumasa Sonoda; Atsushi Hirayama
Linear catheter ablation of the right atrium for rapid atrial pacing-induced sustained atrial fibrillation in dogs.
International heart journal 2012;53(6):375-82.
2012: Ichiro Watanabe; Yuji Kasamaki; Masayoshi Kofune; Hiroaki Mano; Koichi Nagashima; Kimie Ohkubo; Yasuo Okumura; Kazuyuki Sonoda; Atsushi Hirayama
Effects of the antianginal drug trapidil on atrioventricular conduction disturbances during acute myocardial ischemia.
International heart journal 2012;53(3):187-92.
2012: Kimie Ohkubo; Yasuo Okumura; Kazumasa Sonoda; Ichiro Watanabe; Yuji Kasamaki; Masayoshi Kofune; Satoshi Kunimoto; Hiroaki Mano; Koichi Nagashima; Toshiko Nakai; Atsushi Hirayama
A novel technique for improved lesions in the coronary sinus. comparison of bipolar and unipolar ablation.
International heart journal 2012;53(2):129-32.
2012: Ichiro Watanabe; Masayoshi Kofune; Hiroaki Mano; Koichi Nagashima; Kimie Ohkubo; Yasuo Okumura; Kazumasa Sonoda; Atsushi Hirayama
Pharmacologic atrial defibrillation by drug delivery into the temporarily occluded coronary sinus. A canine study.
International heart journal 2012;53(2):125-8.
2012: Koichi Nagashima; Toshiko Nakai; Kimie Ohkubo; Yasuo Okumura; Kazumasa Sonoda; Ichiro Watanabe; Yuji Kasamaki; Masayoshi Kofune; Satoshi Kunimoto; Hiroaki Mano; Atsushi Hirayama
Epicardial ablation with irrigated electrodes: – effect of bipolar vs. unipolar ablation on lesion formation –.
Circulation journal : official journal of the Japanese Circulation Society 2012;76(2):322-7.
2011: Koichi Nagashima; Kimie Ohkubo; Toshiyuki Ohya; Yasuo Okumura; Ichiro Watanabe; Yuji Kasamaki; Masayoshi Kofune; Atsushi Hirayama
Efficacy and feasibility of pericardial endoscopy by a subcutaneous approach.
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 2011;13(10):1501-3.
2011: Yasuo Okumura; Kazumasa Sonoda; Ichiro Watanabe; Yuji Kasamaki; Masayoshi Kofune; Tatsuya Kofune; Hiroaki Mano; Koichi Nagashima; Toshiko Nakai; Kimie Ohkubo; Atsushi Hirayama
Impact of biomarkers of inflammation and extracellular matrix turnover on the outcome of atrial fibrillation ablation: importance of matrix metalloproteinase-2 as a predictor of atrial fibrillation recurrence.
Journal of cardiovascular electrophysiology 2011;22(9):987-93.
2011: Yasuo Okumura
Smoking and the risk of the perpetuation of atrial fibrillation: under debate in large cohort studies.
Heart rhythm : the official journal of the Heart Rhythm Society 2011;8(8):1167-8.
2011: Ichiro Watanabe; Yuji Kasamaki; Masayoshi Kofune; Satoshi Kunimoto; Hiroaki Mano; Koichi Nagashima; Kimie Ohkubo; Yasuo Okumura; Kazuyuki Sonoda; Atsushi Hirayama
Effect of the ATP-sensitive K⁺ channel opener nicorandil in a canine model of proarrhythmia.
International heart journal 2011;52(5):318-22.
2011: Masayoshi Kofune; Hiroaki Mano; Koichi Nagashima; Toshiko Nakai; Kimie Ohkubo; Yasuo Okumura; Ichiro Watanabe; Sonoko Ashino; Yuji Kasamaki; Atsushi Hirayama
Clarifying the arrhythmogenic substrate for Brugada syndrome.
International heart journal 2011;52(5):290-4.
2011: Koichi Nagashima; Toshiko Nakai; Kimie Ohkubo; Yasuo Okumura; Kazumasa Sonoda; Ichiro Watanabe; Masayoshi Kofune; Tatsuya Kofune; Hiroaki Mano; Atsushi Hirayama
Association between epicardial adipose tissue volumes on 3-dimensional reconstructed CT images and recurrence of atrial fibrillation after catheter ablation.
Circulation journal : official journal of the Japanese Circulation Society 2011;75(11):2559-65.
2011: Sonoko Ashino; Yuji Kasamaki; Masayoshi Kofune; Satoshi Kunimoto; Hiroaki Mano; Koichi Nagashima; Toshiko Nakai; Kimie Ohkubo; Yasuo Okumura; Ichiro Watanabe; Atsushi Hirayama
Effects of quinidine on the action potential duration restitution property in the right ventricular outflow tract in patients with brugada syndrome.
Circulation journal : official journal of the Japanese Circulation Society 2011;75(9):2080-6.
2011: Kimie Ohkubo; Yasuo Okumura; Ichiro Watanabe; Sonoko Ashino; Yuji Kasamaki; Masayoshi Kofune; Satoshi Kunimoto; Koichi Nagashima; Toshiko Nakai; Atsushi Hirayama
A new criteria differentiating type 2 and 3 Brugada patterns from ordinary incomplete right bundle branch block.
International heart journal 2011;52(3):159-63.
2011: Kimie Ohkubo; Ichiro Watanabe; Yasuo Okumura; Sonoko Ashino; Masayoshi Kofune; Koichi Nagashima; Tatsuya Kofune; Toshiko Nakai; Satoshi Kunimoto; Yuji Kasamaki; Atsushi Hirayama
Prolonged QRS duration in lead V2 and risk of life-threatening ventricular Arrhythmia in patients with Brugada syndrome.
International heart journal 2011;52(2):98-102.
2011: Ichiro Watanabe; Nuo Min; Yasuo Okumura; Kimie Ohkubo; Masayoshi Kofune; Sonoko Ashino; Koichi Nagashima; Toshiko Nakai; Yuji Kasamaki; Atsushi Hirayama
Temperature-controlled cooled-tip radiofrequency linear ablation of the atria guided by a realtime position management system.
International heart journal 2011;52(1):50-5.
2011: Koichi Nagashima; Ichiro Watanabe; Yasuo Okumura; Kimie Ohkubo; Masayoshi Kofune; Toshiyuki Ohya; Yuji Kasamaki; Atsushi Hirayama
Lesion formation by ventricular septal ablation with irrigated electrodes: comparison of bipolar and sequential unipolar ablation.
Circulation journal : official journal of the Japanese Circulation Society 2011;75(3):565-70.
2011: Yasuo Okumura; Ichiro Watanabe; Toshiko Nakai; Kimie Ohkubo; Tatsuya Kofune; Sonoko Ashino; Masayoshi Kofune; Koichi Nagashima; Takafumi Hiro; Akio Hirata; Mizuki Nikaido; Atsushi Hirayama
A quantitative and qualitative analysis of the virtual unipolar electrograms from non-contact mapping of right or left-sided outflow tract premature ventricular contractions/ventricular tachycardia origins.
Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing 2011;30(1):17-25.
2011: Masayoshi Kofune; Ichiro Watanabe; Yasuo Okumura; Sonoko Ashino; Kimie Ohkubo; Toshiko Nakai; Atsushi Hirayama
Ventricular fibrillation induced by radiofrequency ablation for slow ventricular tachycardia associated with left ventricular dysfunction.
Journal of electrocardiology 2011;44(1):87-91.
2010: Yasuo Okumura; Ichiro Watanabe; Toshiko Nakai; Kimie Ohkubo; Tatsuya Kofune; Sonoko Ashino; Masayoshi Kofune; Koichi Nagashima; Atsushi Hirayama; Fumio Suzuki
Upper turnaround point of the reentry circuit of common atrial flutter--three-dimensional mapping and entrainment study.
Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing 2010;29(3):147-56.
2010: Ichiro Watanabe; Min Nuo; Yasuo Okumura; Kimie Ohkubo; Sonoko Ashino; Masayoshi Kofune; Tatsuya Kofune; Toshiko Nakai; Yuji Kasamaki; Atsushi Hirayama
Temperature-controlled cooled-tip radiofrequency ablation in left ventricular myocardium.
International heart journal 2010;51(3):193-8.
2010: Masayoshi Kofune; Ichiro Watanabe; Kimie Ohkubo; Sonoko Ashino; Yasuo Okumura; Koichi Nagashima; Toshiko Nakai; Yuji Kasamaki; Atsushi Hirayama
Abnormal atrial repolarization and depolarization contribute to the inducibility of atrial fibrillation in Brugada syndrome.
International heart journal 2010;51(3):159-65.
2010: Sonoko Ashino; Ichiro Watanabe; Masayoshi Kofune; Koichi Nagashima; Kimie Ohkubo; Yasuo Okumura; Toshiko Nakai; Yuji Kasamaki; Atsushi Hirayama
Abnormal action potential duration restitution property in the right ventricular outflow tract in Brugada syndrome.
Circulation journal : official journal of the Japanese Circulation Society 2010;74(4):664-70.
2010: Ichiro Watanabe; Yasuo Okumura; Koichi Nagashima; Kimie Ohkubo; Sonoko Ashino; Masayoshi Kofune; Toshiyuki Ohya; Atsushi Hirayama
Electrical remodeling in fibrillating canine atrium: action potential alternans during rapid atrial pacing and late phase 3 early afterdepolarization after cessation of rapid atrial pacing.
International heart journal 2010;51(5):354-8.
2010: Kimie Ohkubo; Ichiro Watanabe; Yasuo Okumura; Yasuhiro Takagi; Sonoko Ashino; Masayoshi Kofune; Hidezou Sugimura; Toshiko Nakai; Yuji Kasamaki; Atsushi Hirayama; Shin-Ichiro Morimoto
Right ventricular histological substrate and conduction delay in patients with Brugada syndrome.
International heart journal 2010;51(1):17-23.
2010: Ichiro Watanabe; Yasuo Okumura; Masayoshi Kofune; Sonoko Ashino; Kimie Ohkubo; Toshiko Nakai; Atsushi Hirayama
Local conduction block of the atria by premature stimulus in a patient with Brugada syndrome.
Journal of electrocardiology 2010;43(1):74-5.
2009: Yasuo Okumura; Ichiro Watanabe; Toshiko Nakai; Kimie Ohkubo; Tatsuya Kofune; Sonoko Ashino; Masayoshi Kofune; Atsushi Hirayama
Left bundle branch block-type ventricular tachycardia originating from the left ventricular septum in a patient with cardiac sarcoidosis.
Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing 2009;26(3):181-4.
2009: Benhur Henz; Paul A Friedman; Charles J Bruce; Yasuo Okumura; Susan B Johnson; Andrew J Danielsen; Douglas L Packer; Samuel J Asirvatham
Synchronous ventricular pacing without crossing the tricuspid valve or entering the coronary sinus--preliminary results.
Journal of cardiovascular electrophysiology 2009;20(12):1391-7.
2009: Yasuo Okumura; Benhur Henz; T Jared Bunch; Charles Dalegrave; Susan B Johnson; Douglas L Packer
Distortion of right superior pulmonary vein anatomy by balloon catheters as a contributor to phrenic nerve injury.
Journal of cardiovascular electrophysiology 2009;20(10):1151-7.
2009: Kenichi Hashimoto; Ichiro Watanabe; Yasuo Okumura; Kimie Ohkubo; Sonoko Ashino; Masayoshi Kofune; Toshiko Nakai; Satoshi Kunimoto; Yuji Kasamaki; Atsushi Hirayama
Comparison of endocardial and epicardial lesion size following large-tip and extra-large-tip transcatheter cryoablation.
Circulation journal : official journal of the Japanese Circulation Society 2009;73(9):1619-26.
2009: Kimie Ohkubo; Ichiro Watanabe; Yasuo Okumura; Sonoko Ashino; Masayoshi Kofune; Masakatsu Ohta; Toshiko Nakai; Satoshi Kunimoto; Yuji Kasamaki; Atsushi Hirayama
Surface ECG characteristics of ventricular tachyarrhythmias before degeneration into ventricular fibrillation in patients with Brugada-type ECG.
International heart journal 2009;50(4):477-87.
2009: Sonoko Ashino; Ichiro Watanabe; Yasuo Okumura; Masayoshi Kofune; Kimie Ohkubo; Toshiko Nakai; Atsushi Hirayama
Implantation of a pacemaker in a patient with severe Parkinson's disease and a pre-existing bilateral deep brain stimulator.
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 2009;11(6):834-5.
2009: Ichiro Watanabe; Nuo Min; Yasuo Okumura; Masayoshi Kofune; Sonoko Ashino; Kimie Ohkubo; Toshiko Nakai; Satoshi Kunimoto; Yuji Kasamaki; Atsushi Hirayama
Use of a novel irrigated balloon catheter to generate continuous right atrial lesions by radiofrequency ablation.
International heart journal 2009;50(3):365-76.
2009: Masayoshi Kofune; Ichiro Watanabe; Sonoko Ashino; Kimie Ohkubo; Yasuo Okumura; Tatsuya Kofune; Toshiko Nakai; Atsushi Hirayama
Action potential alternans in the right ventricular outflow tract in a patient with asymptomatic Brugada syndrome.
Circulation journal : official journal of the Japanese Circulation Society 2009;73(3):580-3.
2008: Kimie Ohkubo; Ichiro Watanabe; Takeshi Yamada; Yasuo Okumura; Kenichi Hashimoto; Sonoko Ashino; Masayoshi Kofune; Tatsuya Kofune; Atsushi Shindo; Hidezou Sugimura; Toshiko Nakai; Satoshi Kunimoto; Atsushi Hirayama
P wave morphology of an arrhythmogenic focus in patients with atrial fibrillation originating from a pulmonary vein or the superior vena cava.
Circulation journal : official journal of the Japanese Circulation Society 2008;72(10):1650-7.
2008: Yasuo Okumura; Mark W Kolasa; Susan B Johnson; T Jared Bunch; Benhur Henz; Christine J O'Brien; Dylan V Miller; Douglas L Packer
Mechanism of tissue heating during high intensity focused ultrasound pulmonary vein isolation: implications for atrial fibrillation ablation efficacy and phrenic nerve protection.
Journal of cardiovascular electrophysiology 2008;19(9):945-51.
2008: Benhur Henz; Paul A Friedman; Charles J Bruce; David R Holmes; Yasuo Okumura; Susan B Johnson; Douglas L Packer; Samuel J Asirvatham
Successful radiofrequency ablation of the cerebral cortex in pigs using the venous system: possible implications for treating CNS disorders.
Epilepsy research 2008;80(2-3):213-8.
2008: Yasuo Okumura; Benhur Henz; Susan B Johnson; T Jared Bunch; Christine J O'Brien; David O Hodge; Andres Altman; Assaf Govari; Douglas L Packer
Three-dimensional ultrasound for image-guided mapping and intervention: methods, quantitative validation, and clinical feasibility of a novel multimodality image mapping system.
Circulation. Arrhythmia and electrophysiology 2008;1(2):110-9.
2008: Masayoshi Kofune; Ichiro Watanabe; Sonoko Ashino; Yasuo Okumura; Kazunori Kawauchi; Tatsuya Kofune; Kimie Ohkubo; Kenichi Hashimoto; Hidezou Sugimura; Toshiko Nakai; Atsushi Hirayama
Three-dimensional reconstruction of the coronary sinus with rotational angiography.
Circulation journal : official journal of the Japanese Circulation Society 2008;72(6):1020-1.
2008: Kimie Ohkubo; Ichiro Watanabe; Yasuo Okumura; Sonoko Ashino; Masayoshi Kofune; Kazunori Kawauchi; Takeshi Yamada; Tatsuya Kofune; Kenichi Hashimoto; Atsushi Shindo; Hidezou Sugimura; Toshiko Nakai; Satoshi Kunimoto; Satoshi Saito; Atsushi Hirayama
Anatomic and electrophysiologic differences between chronic and paroxysmal atrial flutter: intracardiac echocardiographic analysis.
Pacing and clinical electrophysiology : PACE 2008;31(4):432-7.
2008: Yasuo Okumura; Ichiro Watanabe; Kimie Ohkubo; Takeshi Yamada; Kazunori Kawauchi; Yasuhiro Takagi; Sonoko Ashino; Masayoshi Kofune; Tatsuya Kofune; Kenichi Hashimoto; Atsushi Shindo; Hidezou Sugimura; Toshiko Nakai; Satoshi Kunimoto; Satoshi Saito; Atsushi Hirayama
Full-motion two- and three-dimensional pulmonary vein imaging by intracardiac echocardiography after pulmonary vein isolation.
Pacing and clinical electrophysiology : PACE 2008;31(4):409-17.
2008: Sonoko Ashino; Ichiro Watanabe; Masayoshi Kofune; Yasuo Okumura; Kazunori Kawauchi; Takeshi Yamada; Kimie Okubo; Kenichi Hashimoto; Atsushi Shindo; Hidezou Sugimura; Toshiko Nakai; Satoshi Saito; Atsushi Hirayama
Radiofrequency catheter ablation of ventricular tachycardia originating in the left posterior and left anterior fascicles in a patient with prior myocardial infarction.
International heart journal 2008;49(1):119-27.
2007: Kimie Ohkubo; Ichiro Watanabe; Yasuhiro Takagi; Yasuo Okumura; Sonoko Ashino; Masayoshi Kofune; Kazunori Kawauchi; Takeshi Yamada; Tatsuya Kofune; Kenichi Hashimoto; Atsushi Shindo; Hidezou Sugimura; Toshiko Nakai; Satoshi Saito; Atsushi Hirayama
Electrocardiographic and electrophysiologic characteristics in patients with Brugada type electrocardiogram and inducible ventricular fibrillation: single center experience.
Circulation journal : official journal of the Japanese Circulation Society 2007;71(9):1437-41.
2007: Sonoko Ashino; Ichiro Watanabe; Yasuo Okumura; Kimie Okubo; Satoshi Saito
Change in atrial flutter wave morphology-insight into the sources of electrocardiographic variants in common atrial flutter.
Pacing and clinical electrophysiology : PACE 2007;30(8):1023-6.
2007: Kimie Ohkubo; Ichiro Watanabe; Yasuhiro Takagi; Yasuo Okumura; Sonoko Ashino; Masayoshi Kofune; Tatsuya Kofune; Atsushi Shindo; Hidezou Sugimura; Toshiko Nakai; Satoshi Kunimoto; Yuji Kasamaki; Satoshi Saito; Atsushi Hirayama
Endocardial electrograms from the right ventricular outflow tract after induced ventricular fibrillation in patients with Brugada syndrome.
Circulation journal : official journal of the Japanese Circulation Society 2007;71(8):1258-62.
2007: Yasuo Okumura; Ichiro Watanabe; Sonoko Ashino; Masayoshi Kofune; Yasuhiro Takagi; Tatsuya Kofune; Kimie Okubo; Kenichi Hashimoto; Atsushi Shindo; Hidezou Sugimura; Toshiko Nakai; Yuji Kasamaki; Satoshi Saito
Electrophysiological properties of the atrium after cardioversion of chronic atrial fibrillation: relation to the plasma brain natriuretic peptide level.
International heart journal 2007;48(4):485-96.
2007: Yasuo Okumura; Ichiro Watanabe; Kimie Ohkubo; Satoshi Saito
Successful catheter ablation for incessant ventricular tachycardia in a patient with hypertrophic cardiomyopathy.
Circulation journal : official journal of the Japanese Circulation Society 2007;71(7):1164-8.
2007: Yasuo Okumura; Ichiro Watanabe; Sonoko Ashino; Masayoshi Kofune; Kimie Ohkubo; Yasuhiro Takagi; Kazunori Kawauchi; Takeshi Yamada; Kenichi Hashimoto; Atsushi Shindo; Hidezou Sugimura; Toshiko Nakai; Satoshi Saito
Electrophysiologic and anatomical characteristics of the right atrial posterior wall in patients with and without atrial flutter: analysis by intracardiac echocardiography.
Circulation journal : official journal of the Japanese Circulation Society 2007;71(5):636-42.
2007: Kimie Ohkubo; Ichiro Watanabe; Yasuo Okumura; Sonoko Ashino; Masayoshi Kofune; Kenichi Hashimoto; Atsushi Shindo; Hidezou Sugimura; Toshiko Nakai; Yuji Kasamaki; Satoshi Saito
Pulmonary vein isolation for atrial fibrillation in patients with paroxysmal atrial fibrillation and prolonged sinus pause.
International heart journal 2007;48(2):247-52.
2007: Yasuo Okumura; Ichiro Watanabe; Kimie Ohkubo; Sonoko Ashino; Masayoshi Kofune; Kenichi Hashimoto; Atsushi Shindo; Hidezou Sugimura; Toshiko Nakai; Yuji Kasamaki; Satoshi Saito
Prediction of the efficacy of pulmonary vein isolation for the treatment of atrial fibrillation by the signal-averaged P-wave duration.
Pacing and clinical electrophysiology : PACE 2007;30(3):304-13.
2006: Takeshi Yamada; Ichiro Watanabe; Yasuo Okumura; Yasuhiro Takagi; Kimie Okubo; Kenichi Hashimoto; Atsushi Shindo; Toshiko Nakai; Yuji Kasamaki; Satoshi Saito
Atrial electrophysiological abnormality in patients with Brugada syndrome assessed by P-wave signal-averaged ECG and programmed atrial stimulation.
Circulation journal : official journal of the Japanese Circulation Society 2006;70(12):1574-9.
2006: Yasuo Okumura; Ichiro Watanabe; Sonoko Ashino; Masayoshi Kofune; Takeshi Yamada; Yasuhiro Takagi; Kazunori Kawauchi; Kimie Okubo; Kenichi Hashimoto; Atsushi Shindo; Hidezou Sugimura; Toshiko Nakai; Satoshi Saito
Anatomical characteristics of the cavotricuspid isthmus in patients with and without typical atrial flutter: Analysis with two- and three-dimensional intracardiac echocardiography.
Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing 2006;17(1):11-9.
2006: Yasuhiro Takagi; Ichiro Watanabe; Yasuo Okumura; Kimie Okubo; Sonoko Ashino; Masayoshi Kofune; Kenichi Hashimoto; Atsushi Shindo; Hidezou Sugimura; Toshiko Nakai; Satoshi Saito
Inducibility of atrial flutter in patients with atrioventricular nodal reentrant tachycardia.
Circulation journal : official journal of the Japanese Circulation Society 2006;70(9):1133-7.
2006: Yasuo Okumura; Ichiro Watanabe; Kimie Ohkubo; Kenichi Hashimoto; Sonoko Ashino; Masayoshi Kofune; Hidezou Sugimura; Atsushi Shindo; Toshiko Nakai; Satoshi Saito
Idiopathic left ventricular tachycardia with a change from left to right axis deviation during radiofrequency catheter ablation.
International heart journal 2006;47(3):455-60.
2006: Yasuo Okumura; Ichiro Watanabe; Takeshi Yamada; Kimie Ohkubo; Kazunori Kawauchi; Sonoko Ashino; Yasuhiro Takagi; Hidezou Sugimura; Kenichi Hashimoto; Atsushi Shindo; Satoshi Saito
Usefulness of the polarity in high-density wide range-filtered bipolar mapping to detect isthmus block during radiofrequency ablation of typical atrial flutter.
Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing 2006;15(2):93-102.
2005: Yasuo Okumura; Ichiro Watanabe; Toshiko Nakai; Hidezou Sugimura; Kenichi Hashimoto; Riko Masaki; Kimie Ohkubo; Yasuhiro Takagi; Atsushi Shindo; Yukio Ozawa; Satoshi Saito; Katsuo Kanmatsuse
Recurrence of atrial fibrillation after internal cardioversion of persistent atrial fibrillation: prognostic importance of electrophysiologic parameters.
Circulation journal : official journal of the Japanese Circulation Society 2005;69(12):1514-20.
2005: Yasuhiro Takagi; Ichiro Watanabe; Riko Masaki; Yasuo Okumura; Takeshi Yamada; Rie Wakita; Kazunori Kawauchi; Kimie Ohkubo; Tatsuya Kofune; Hidezou Sugimura; Toshiko Nakai; Yukio Ozawa; Satoshi Saito
Complete AV block developing in a patient with manifest ventricular preexcitation.
International heart journal 2005;46(4):729-35.
2005: Hidezou Sugimura; Ichiro Watanabe; Yasuo Okumura; Kimie Ohkubo; Sonoko Ashino; Toshiko Nakai; Yuji Kasamaki; Satoshi Saito
Differential pacing for distinguishing slow conduction from complete conduction block of the tricuspid-inferior vena cava isthmus after radiofrequency ablation for atrial flutter--role of transverse conduction through the crista terminalis.
Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing 2005;13(2):125-34.
2005: Tatsuya Kofune; Ichiro Watanabe; Kimie Okubo; Yasuo Okumura; Riko Masaki; Atsushi Shindo; Satoshi Saito
Effect of IKr blocker nifekalant on atrial action potential duration after successful internal cardioversion of chronic atrial fibrillation.
Pacing and clinical electrophysiology : PACE 2005;28(5):391-6.
2004: Yasuo Okumura; Ichiro Watanabe; Takeshi Yamada; Kimie Ohkubo; Hidezou Sugimura; Kenichi Hashimoto; Tatsuya Kofune; Yasuhiro Takagi; Rie Wakita; Naohiro Oshikawa; Kazunori Kawauchi; Satoshi Saito; Yukio Ozawa; Katsuo Kanmatsuse; Yasuyuki Yoshikawa; Yuko Asakawa
Relationship between anatomic location of the crista terminalis and double potentials recorded during atrial flutter: intracardiac echocardiographic analysis.
Journal of cardiovascular electrophysiology 2004;15(12):1426-32.
2004: Yasuo Okumura; Ichiro Watanabe; Takeshi Yamada; Kimie Ohkubo; Riko Masaki; Hidezou Sugimura; Kenichi Hashimoto; Tatsuya Kofune; Yasuhiro Takagi; Rie Wakita; Naohiro Oshikawa; Satoshi Saito; Yukio Ozawa; Katsuo Kanmatsuse; Yasuyuki Yoshikawa; Yuko Asakawa
Comparison of coronary sinus morphology in patients with and without atrioventricular nodal reentrant tachycardia by intracardiac echocardiography.
Journal of cardiovascular electrophysiology 2004;15(3):269-73.
2004: Ichiro Watanabe; Yasuo Okumura; Toshiko Nakai; Satoshi Saito; Yukio Ozawa; Katsuo Kanmatsuse
Alternating narrow and wide complex tachycardia: what is the mechanism?
Pacing and clinical electrophysiology : PACE 2004;27(2):246-8.
2004: Rie Wakita; Ichiro Watanabe; Yasuo Okumura; Takeshi Yamada; Yasuhiro Takagi; Tatsuya Kofune; Kimie Okubo; Riko Masaki; Hidezou Sugimura; Naohiro Oshikawa; Satoshi Saito; Yukio Ozawa; Katsuo Kanmatsuse
Brugada-like electrocardiographic pattern unmasked by fever.
Japanese heart journal 2004;45(1):163-7.
2004: Kimie Ohkubo; Ichiro Watanabe; Yasuo Okumura; Takeshi Yamada; Kenichi Hashimoto; Riko Masaki; Naohiro Oshikawa; Tatsuya Kofune; Rie Wakita; Yasuhiro Takagi; Satoshi Saito; Yukio Ozawa; Katsuo Kanmatsuse
Wolff-Parkinson-White syndrome concomitant with asymptomatic Brugada syndrome.
Pacing and clinical electrophysiology : PACE 2004;27(1):109-11.
2003: Yasuo Okumura; Ichiro Watanabe; Naohiro Oshikawa; Riko Masaki; Kimie Ohkubo; Takeshi Yamada; Tatsuya Kofune; Rie Wakita; Yasuhiro Takagi; Kenichi Hashimoto; Satoshi Saito; Yukio Ozawa; Katsuo Kanmatsuse
Reproducible induction of atrioventricular nodal reentrant tachycardia with adenosine triphosphate.
Pacing and clinical electrophysiology : PACE 2003;26(12):2321-3.
2003: Yasuo Okumura; Ichiro Watanabe; Naohiro Oshikawa; Riko Masaki; Kimie Okubo; Kenichi Hashimoto; Tatsuya Kofune; Takeshi Yamada; Rie Wakita; Yasuhiro Takagi; Satoshi Saito; Yukio Ozawa; Katsuo Kanmatsuse
Noninvasive diagnosis of dual AV nodal physiology in patients with AV nodal reentrant tachycardia by adenosine triphosphate test.
Japanese heart journal 2003;44(5):655-66.
2003: Kimie Ohkubo; Ichiro Watanabe; Yasuo Okumura; Takeshi Yamada; Riko Masaki; Tatsuya Kofune; Naohiro Oshikawa; Yuji Kasamaki; Satoshi Saito; Yukio Ozawa; Katsuo Kanmatsuse
Intravenous administration of class I antiarrhythmic drug induced T wave alternans in an asymptomatic Brugada syndrome patient.
Pacing and clinical electrophysiology : PACE 2003;26(9):1900-3.
2003: Yasuo Okumura; Ichiro Watanabe; Tatsuya Kofune; Yasuhiro Takagi; Satoshi Saito; Yukio Ozawa; Katsuo Kanmatsuse
A narrow QRS complex tachycardia: what is the mechanism?
Pacing and clinical electrophysiology : PACE 2003;26(9):1897-8.
2003: Riko Masaki; Ichiro Watanabe; Toshiaki Kojima; Naohiro Oshikawa; Kimie Okubo; Yasuo Okumura; Hidezou Sugimura; Satoshi Saito; Yukio Ozawa; Katsuo Kanmatsuse
Combined atriofascicular and fasciculoventricular connections.
Circulation journal : official journal of the Japanese Circulation Society 2003;67(8):715-7.
2003: Ichiro Watanabe; Riko Masaki; Min Nuo; Naohiro Oshikawa; Kimie Okubo; Yasuo Okumura; Toshiyuki Ohya; Takeshi Yamada; Satoshi Saito; Yukio Ozawa; Katsuo Kanmatsuse
Effect of 60 minutes of rapid atrial pacing on atrial action potential duration in the in-situ canine heart.
Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing 2003;8(3):165-71.
2002: Naohiro Oshikawa; Ichiro Watanabe; Riko Masaki; Yasuo Okumura; Kimie Okubo; Hidezou Sugimura; Toshiaki Kojima; Satoshi Saito; Yukio Ozawa; Katsuo Kanmatsuse
Relationship between polarity of the flutter wave in the surface ECG and endocardial atrial activation sequence in patients with typical counterclockwise and clockwise atrial flutter.
Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing 2002;7(3):215-23.
2002: Ichiro Watanabe; Riko Masaki; Kimie Ohkubo; Yasuo Okumura; Takeshi Yamada; Naohiro Oshikawa; Satoshi Saito; Yukio Ozawa; Katsuo Kanmatsuse
Rate-dependent changes in atrial action potential duration after short- duration rapid atrial pacing in humans.
Circulation journal : official journal of the Japanese Circulation Society 2002;66(9):874-5.
2002: Kimie Ohkubo; Ichiro Watanabe; Toshiaki Kojima; Riko Masaki; Naohiro Oshikawa; Hidezou Sugimura; Yasuo Okumura; Takeshi Yamada; Satoshi Saito; Yukio Ozawa; Katsuo Kanmatsuse
Ectopic atrial rhythm with exit block following catheter ablation for focal atrial tachycardias in a patient with prior surgery for atrial septal defect.
Pacing and clinical electrophysiology : PACE 2002;25(6):986-8.