Effects of Cardiac Resynchronization Therapy on the Arrhythmic Substrate in a Patient with Long QT and Torsades de pointes
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概要
- 論文の詳細を見る
We describe a patient with torsades de pointes (TdP) who was implanted with cardiac resynchronization therapy defibrillator (CRT-D). At the time of CRT-D implantation, left ventricular (LV) epicardial pacing exacerbated TdPs and developed into electrical storm, which was triggered even by biventricular pacing. We needed to inactivate the LV lead for 2 weeks. At the next device check testing of LV pacing still induced TdPs, whereas biventricular pacing did not. After starting the continuous biventricular pacing no ventricular arrhythmias happened, and furthermore the QT intervals prolonged by LV pacing were obviously shortened only after 2 weeks as ventricular systolic function recovered. Then even continuous LV alone pacing induced no TdP. These findings indicate novel electrical effects of cardiac resynchronization therapy.
- 日本不整脈学会の論文
- 2011-10-25
著者
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Ohnishi Satoshi
Department Of Cardiology Kanto Medical Center Ntt Ec
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Yamaguchi Jun-ichi
Department Of Applied Chemistry Faculty Of Engineering Kanagawa Institute Of Technology
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Arashi Hiroyuki
Department Of Cardiology Kanto Medical Center Ntt Ec
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Yamasaki Masao
Department Of Biochemistry And Applied Biosciences Faculty Of Agriculture Miyazaki University
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Ohnishi Satoshi
Department Of Cardiology Kanto Medical Center Nttec
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Yamasaki Masao
Department Of Cardiology Kanto Medical Center Nttec
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Endo Goro
Department Of Cardiology Kanto Medical Center Nttec
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IKUTOMI Masayasu
Department of Cardiology, Kanto Medical Center, NTTEC
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MATSUSITA Masashiro
Department of Cardiology, Kanto Medical Center, NTTEC
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WATARI Yuji
Department of Cardiology, Kanto Medical Center, NTTEC
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Watari Yuji
Department Of Cardiology Kanto Medical Center Nttec
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Ikutomi Masayasu
Department Of Cardiology Kanto Medical Center Nttec
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Matsusita Masashiro
Department Of Cardiology Kanto Medical Center Nttec
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Arashi Hiroyuki
Department Of Cardiology Kanto Medical Center Nttec
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Ohnishi Satoshi
Department of Applied Chemistry, Faculty of Engineering, Yamagata University
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