Arrhythmias Utilizing Concealed Nodoventricular or His-Ventricular Pathways: A Structured Approach to Diagnosis and Management

Satoshi Higuchi, Aleksandr Voskoboinik, Jeffrey J. Goldberger, Babak Nazer, Thomas Dewland, Asaf Danon, Bernard Belhassen, Patrick J. Tchou, Melvin M. Scheinman

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Objectives: This study sought to describe the electrophysiologic characteristics, diagnostic maneuvers, and treatment of a series of arrhythmias using concealed nodoventricular (cNV) or His-ventricular (cHV) pathways. Background: Confirming the presence and participation of cNV or cHV pathways in tachyarrhythmias is challenging. Methods: We present 4 cases of tachycardias with a participatory cNV or cHV pathway. Results: The first patient had a narrow complex tachycardia with ventriculoatrial dissociation. Findings of an entrainment pacing from the right ventricle and fused premature ventricular complexes suggested cNV pathway involvement. The second patient had nonsustained narrow complex tachycardia with more ventricular than atrial complexes. The tachycardia exhibited an anterograde His-right bundle (RB) activation sequence and normal His-ventricular (HV) interval and consistently terminated with fused ventricular extra stimuli, suggesting cNV pathway participation. The third patient had a wide complex tachycardia (WCT) with either a right or left bundle branch block pattern. The WCT showed an eccentric His-RB activation sequence and short HV interval and terminated with fused premature ventricular complexes, suggesting a cHV (or concealed fasciculoventricular) pathway involvement. The fourth patient had a WCT with alternating bundle branch block morphologies with a short HV interval. Entrainment from the basal right ventricle demonstrated fusion and a short postpacing interval, suggesting cHV (or fasciculoventricular) pathway involvement. Ablation at the proximal RB rendered the tachycardia noninducible. Conclusions: A structured approach can help diagnose and treat cNV or cHV pathways. We emphasize the importance of evaluating both the His-RB activation pattern and HV interval during sinus rhythm and tachycardia as well as the ventricular pacing study.

Original languageEnglish (US)
Pages (from-to)1588-1599
Number of pages12
JournalJACC: Clinical Electrophysiology
Volume7
Issue number12
DOIs
StatePublished - Dec 2021

Keywords

  • bundle branch re-entry
  • fasciculoventricular pathway
  • His-ventricular pathway
  • nodoventricular pathway
  • supraventricular tachycardia

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

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