Storms of ventricular fibrillation responsive to isoproterenol in an idiopathic ventricular fibrillation patient demonstrating complete right bundle branch block

Yoshiyasu Aizawa, Seiji Takatsuki, Kohei Inagawa, Yoshinori Katsumata, Takahiko Nishiyama, Takehiro Kimura, Nobuhiro Nishiyama, Kotaro Fukumoto, Yoko Tanimoto, Kojiro Tanimoto, Satoshi Ogawa, Keiichi Fukuda

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A 45-year-old male was admitted to our hospital after successful resuscitation of cardiac arrest. Ventricular fbrilla-tion (VF) had occurred during breakfast and was defbrillated by an automated external defbrillator operated by emergency medical service staff. On admission, his ECG demonstrated complete right bundle branch block as the sole abnormality. Intensive examination could not detect any structural disease leading to a diagnosis of idiopathic VF and implantation of an ICD. VF storm occurred one month after hospital discharge and beta-blocker, amiodarone, and sedative administration had no effect on VF. Likewise, catheter ablation for triggering premature ventricular beats failed to control the VF storm. The VF storm then subsided in the following weeks and the patient was discharged on amiodarone. A half month later VF storm recurred and the patient was admitted again. This time, isoproterenol infusion was effective in suppressing VF, and thereafter the patient was administered bepridil and followed up without recurrence of VF for 1.5 years. From these benefcial effects, the VF of the patient was suggested to share common arrhythmogenic characteristics to those of Brugada syndrome or J-wave associated VF.

Original languageEnglish
Pages (from-to)240-242
Number of pages3
JournalInternational Heart Journal
Volume54
Issue number4
DOIs
Publication statusPublished - 2013

Keywords

  • Bepridil
  • Catheter ablation
  • Electrical storm
  • Electrocardiogram
  • Implantable cardioverter defbrillator
  • Sudden death

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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