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. 1997 Feb;77(2):180–182. doi: 10.1136/hrt.77.2.180

Mechanism of QRS electrical alternans.

B Brembilla-Perrot 1, H Lucron 1, F Schwalm 1, A Haouzi 1
PMCID: PMC484671  PMID: 9068405

Abstract

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.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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