Initiation of a Wide QRS Complex Tachycardia with Alternating Ventriculoatrial Interval: What Is the Mechanism?

PubMed Central 2026 Open access

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Authors: Can Özkan, OZCAN OZEKE, Elif Hande Özcan Çetin, Meryem Kara, S.G. Huseynova, Ahmet Korkmaz, Firat Ozcan, Serkan Çay, Dursun Aras, Serkan Topaloğlu
DOI: 10.19102/icrm.2025.17021
Cited by: 0

Abstract

The differential diagnosis for wide complex tachycardia includes all causes of narrow complex tachycardia with bundle branch block, all causes of narrow complex tachycardia with antegrade pre-excitation, ventricular tachycardia, and antidromic and other pre-excited reciprocating tachycardias. The variation in a specific intracardiac interval that causes a subsequent change in the tachycardia cycle length or another intracardiac interval can be diagnostic in these arrhythmias.

Fields of Study & Subjects

Cardiac Arrhythmias and Treatments Cardiac electrophysiology and arrhythmias Cardiac pacing and defibrillation studies

Publication details

Journal / source
PubMed Central
Volume
17
Issue
2
Pages
6607–6611
Publication date
1 February 2026
Language
EN