Accelerated idioventricular rhythm unmasking the brugada electrocardiographic pattern

Ann Noninvasive Electrocardiol. 2015 Jan;20(1):91-3. doi: 10.1111/anec.12177. Epub 2014 Jul 9.

Abstract

It has recently been reported that a high-degree right bundle branch block (RBBB) may conceal the electrocardiographic manifestations of the Brugada ECG pattern. An 82-year-old with recent onset palpitations was seen in clinic. The resting ECG showed sinus rhythm, high-degree RBBB, and an irregular idioventricular rhythm. Some fusion beats between sinus rhythm and idioventricular rhythm occurred spontaneously depicting incomplete RBBB pattern and a clear cut elevation of the ST-segment was unveiled, giving rise to a suspicious Brugada ECG pattern. The mechanisms and implications of these findings are discussed.

Keywords: Brugada ECG pattern; accelerated idioventricular rhythm.

Publication types

  • Case Reports

MeSH terms

  • Accelerated Idioventricular Rhythm / physiopathology*
  • Aged, 80 and over
  • Anti-Arrhythmia Agents
  • Brugada Syndrome / physiopathology*
  • Electrocardiography*
  • Humans
  • Male

Substances

  • Anti-Arrhythmia Agents