His bundle extrasystoles revisited: the great electrocardiographic masquerader. uri icon

Overview

abstract

  • A 74-year-old man with past history of near syncope presented with frequent periods of second-degree atrioventricular block (2° AVB). An electrophysiological study revealed prolonged atrial-His and His-ventricular (HV) intervals and frequent His bundle (H) extrasystoles. The latter manifested in the surface electrocardiogram as premature atrial, junctional, or ventricular beats, as well as 2° AVB that mimicked Wenckebach or Mobitz II block. Procainamide markedly suppressed H extrasystole. However, because of the presence of prolonged HV interval and history of presyncope, a permanent pacemaker was inserted. The case illustrates the varied manifestation of H extrasystole and presents guidelines for management.

publication date

  • May 14, 2010

Research

keywords

  • Bundle of His
  • Electrocardiography
  • Ventricular Premature Complexes

Identity

Scopus Document Identifier

  • 79958150330

Digital Object Identifier (DOI)

  • 10.1111/j.1540-8159.2010.02772.x

PubMed ID

  • 20487363

Additional Document Info

volume

  • 34

issue

  • 6