Dormant conduction in the right ventricular outflow tract unmasked by adenosine in a patient with Brugada syndrome

J Cardiovasc Electrophysiol. 2021 Apr;32(4):1182-1186. doi: 10.1111/jce.14974. Epub 2021 Mar 10.

Abstract

Recent data of electrophysiological mapping in patients with Brugada syndrome (BrS) suggest that the presence of an abnormal arrhythmogenic substrate in the epicardial right ventricular outflow tract is responsible for ST-segment elevation and ventricular fibrillation (VF). Complete elimination of the epicardial abnormal potentials normalizes Brugada-pattern electrocardiogram and suppresses VF recurrence. We herein report the first case of BrS in which an injection of adenosine unmasked dormant conduction in the epicardial RVOT after the disappearance of the epicardial potentials.

Keywords: Brugada syndrome; ablation; dormant conduction; ventricular fibrillation.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adenosine
  • Brugada Syndrome* / diagnosis
  • Brugada Syndrome* / surgery
  • Catheter Ablation*
  • Electrocardiography
  • Humans
  • Ventricular Fibrillation / diagnosis

Substances

  • Adenosine