Effects of Cardiac Resynchronization Therapy on the Arrhythmic Substrate in a Patient with Long QT and Torsades de pointes
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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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- Watari Yuji
- Department of Cardiology, Kanto Medical Center, NTTEC
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- Endo Goro
- Department of Cardiology, Kanto Medical Center, NTTEC
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- Yamaguchi Jun-ichi
- Department of Cardiology, Kanto Medical Center, NTTEC
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- Yamasaki Masao
- Department of Cardiology, Kanto Medical Center, NTTEC
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- Ohnishi Satoshi
- Department of Cardiology, Kanto Medical Center, NTTEC
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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.
収録刊行物
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- Journal of Arrhythmia
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Journal of Arrhythmia 27 (4), 332-337, 2011
日本不整脈学会
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詳細情報 詳細情報について
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- CRID
- 1390001205246151936
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- NII論文ID
- 10030721678
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- NII書誌ID
- AA12059301
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- ISSN
- 18832148
- 18804276
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可