Mechanism of QRS electrical alternans

Béatrice Brembilla-Perrot, Hugues Lucron, Françoise Schwalm, Annick Haouzi

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


In patients with latent dual atrioventricular nodal pathways a 2:1 ventriculoatrial block often occurs during ventricular pacing and is generally associated with the concomitant appearance of QRS alternans. This type of QRS alternans is related to retrograde conduction, and a concealed retrograde conduction in the His Purkinje system could explain the QRS alternans. A case that confirms the hypothesis that electrical alternans is secondary to a 2:1 block in the activation of some part of the ventricles is reported.

Original languageEnglish (US)
Pages (from-to)180-182
Number of pages3
Issue number2
StatePublished - 1997

All Science Journal Classification (ASJC) codes

  • Cardiology and Cardiovascular Medicine

Cite this