Characteristics of J wave-associated idiopathic ventricular fibrillation: role of drugs.

Masaomi Chinushi, Kanae Hasegawa, Kenichi Iijima, Hiroshi Furushima, Daisuke Izumi, Akinori Sato, Yoshifusa Aizawa

School of Health Science, First Department of Internal Medicine, Niigata University School of Medicine, Niigata, Japan. masaomi@clg.niigata-u.ac.jp

Pacing and clinical electrophysiology : PACE 2012 Aug

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A storm of J wave-associated idiopathic ventricular fibrillation (VF) was observed in a 49-year-old man. Multiform premature ventricular complexes initiated the episodes of VF. Intravenous isoproterenol attenuated the J wave and suppressed the VF storm. After the implantation of a cardioverter defibrillator, VF was induced by programmed electrical stimulation at baseline, and it was terminated by a 25-J shock after an unsuccessful 15-J shock. During oral treatment with quinidine sulfate, 600 mg daily, the J wave was attenuated and VF became noninducible by programmed electrical stimulation. VF induced by a shock delivered on the T wave was terminated by a single 10-J shock. Mean F-F interval and dominant frequency of the VF were 162 ms and 6.8 Hz at baseline, and 210 ms and 5.0 Hz during the quinidine sulfate treatment. ©2011, The Authors Journal compilation ©2011 Wiley Periodicals, Inc.

Citation

Masaomi Chinushi, Kanae Hasegawa, Kenichi Iijima, Hiroshi Furushima, Daisuke Izumi, Akinori Sato, Yoshifusa Aizawa. Characteristics of J wave-associated idiopathic ventricular fibrillation: role of drugs. Pacing and clinical electrophysiology : PACE. 2012 Aug;35(8):e226-30