The main trunk of the left bundle branch is not part of the re-entry circuit of verapamil-sensitive idiopathic left ventricular tachycardia
スポンサーリンク
概要
- 論文の詳細を見る
We report the case of a 19-year-old man with verapamil-sensitive idiopathic left ventricular tachycardia (ILVT), who had paroxysmal palpitations for 3 years. Programmed right atrial and ventricular stimulation easily induced ventricular tachycardia (VT) with QRS duration of 125 ms, right bundle branch block pattern, and right inferior axis, which are characteristics of ILVT. Left ventricular endocardial mapping accidentally produced a complete left bundle branch block and provoked prolongation of the QRS duration of VT, which was 143 ms. However, no changes occurred in the cycle length, inducibility, or maintenance of VT. The VT was eliminated successfully by catheter ablation at the pre-Purkinje potential (PP) recording site. These findings suggest that the main trunk of the left bundle branch is not a critical component of the re-entry circuit of ILVT.
著者
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Naruko Takahiko
Department Of Cardiology Osaka City General Hospital
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Haze Kazuo
Department Of Cardiology National Cardiovascular Center
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Nakagawa Eiichiro
Department Of Cardiology Osaka City General Hospital
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Takagi Masahiko
Department Of Internal Medicine And Cardiology Graduate School Of Medicine Osaka City University
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Abe Yukio
Department of Applied Chemistry, Faculty of Engineering, Yamagata University
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Takagi Masahiko
Department of Internal Medicine and Cardiology, Osaka City University Medical School
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Itoh Akira
Department of Applied Chemistry, Faculty of Engineering, Osaka University
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Komatsu Rhyshi
Department of Cardiology, Osaka City General Hospital
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