Persistent ventricular preexcitation despite right bundle branch block

Taihei Itoh, Takumi Yamada

Research output: Contribution to journalArticlepeer-review

Abstract

A 44-year-old man with a history of ventricular preexcitation and supraventricular tachycardia was evaluated. The baseline electrocardiogram exhibited ventricular preexcitation with a normal PR interval and a minimally negative delta wave in lead V1 and positive delta waves in the inferior leads. The administration of adenosine resulted in a progressive prolongation of the PR interval with a fixed preexcitation degree, suggesting the presence of antegrade conduction over the fasciculo-ventricular pathway. When complete right bundle branch block occurred, the degree of preexcitation never changed. These findings suggested that the fasciculo-ventricular pathway was likely to be connected to the left-sided His-Purkinje system.

Original languageEnglish (US)
Pages (from-to)146-147
Number of pages2
JournalIndian Pacing and Electrophysiology Journal
Volume18
Issue number4
DOIs
StatePublished - Jul 1 2018
Externally publishedYes

Bibliographical note

Funding Information:
There was no financial support for this study.

Publisher Copyright:
© 2018 Indian Heart Rhythm Society

Keywords

  • Bundle branch block
  • Fasciculoventricular pathway
  • Mahaim fiber
  • Preexcitation

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