Bepridil for Drug-Refractory Ventricular Tachyarrhythmias
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概要
- 論文の詳細を見る
Aims: To avoid frequent discharges of implantable cardioverter defibrillators, antiarrhythmic drugs may be needed in some patients with ventricular tachyarrhythmias. For ventricular tachyarrhythmias refractory to conventional antiarrhythmic drugs, we evaluated the efficacy of bepridil, a multiple ion-channel blocker. Methods and results: Sixteen patients with structural heart disease and ventricular tachyarrhythmias refractory to multiple antiarrhythmic drugs (4.1±1.6 drugs including class III drugs) were enrolled. Bepridil was prescribed at a mean dose of 156±40 mg/day. Bepridil prolonged the QT/QTc interval without affecting heart rate or the QRS duration. During a mean follow-up of 52±44 months, bepridil completely suppressed ventricular tachyarrhythmias in 6 of the 16 patients (38%) and the drug decreased the frequency of ventricular tachyarrhythmia recurrences by>75% in 3 of the other 10 patients. The markers of complete suppression of ventricular tachyarrhythmias during bepridil treatment included a smaller number of VT morphologies, a better NYHA functional class, and a greater drug-induced prolongation of the QT/QTc interval. The result of electrophysiologic study-guided evaluation of bepridil was closely associated with the clinical efficacy of bepridil in 7 of 8 patients. Conclusion: Bepridil appears to be useful to suppress drug-refractory ventricular tachyarrhythmia recurrence.
- 社団法人 日本内科学会の論文
著者
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Chinushi Masaomi
Niigata School Of Health Science
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Aizawa Yoshifusa
the Department of Internal Medicine, Niigata University Medical Hospital
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Washizuka Takashi
The Division of Cardiology Niigata University Graduate School of Medical and Dental Sciences
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Komura Satoru
The Division of Cardiology Niigata University Graduate School of Medical and Dental Sciences
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Tanabe Yasutaka
The Division of Cardiology Niigata University Graduate School of Medical and Dental Sciences
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Furushima Hiroshi
The Division of Cardiology Niigata University Graduate School of Medical and Dental Sciences
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WATANABE Hiroshi
the Department of Internal Medicine, Aino Memorial Hospital
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Komura Satoru
新潟大学 医歯学総合研究科循環器学
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Komura Satoru
The Department Of Internal Medicine(ii) Niigata University School Of Medicine
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Izumi Daisuke
The Division of Cardiology and School of Health Sciences
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Okamura Kazuki
The Division of Cardiology and School of Health Sciences
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Komura Satoru
The Division of Cardiology and School of Health Sciences
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Tanabe Yasutaka
The Division of Cardiology and School of Health Sciences
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Washizuka Takashi
The Division of Cardiology and School of Health Sciences
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