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Spontaneous variability in intracardiac intervals during supraventricular tachycardia: Electrophysiologic mechanisms

Year: 2025

Type: article

Abstract: BACKGROUND: The exact nature of the circuit and the existence of the upper and lower common pathways in Atrioventricular nodal re-entrant tachycardia (AVNRT) are not well defined. METHODS AND RESULTS: This report describes a case of re-entrant supraventricular tachycardia in which electrophysiologic manoeuvres confirmed an atypical AVNRT. During the tachycardia there was spontaneous variability in intracardiac intervals, and possible mechanisms are discussed. The tachycardia resolved after slow-pathway ablation. CONCLUSION: Atypical AVNRT can cause spontaneous intracardiac interval variability that complicates diagnosis but is effectively treated with targeted slow-pathway ablation.

Source: Indian Pacing and Electrophysiology Journal

DOI: 10.1016/j.ipej.2025.11.004

Authors: Devendra Singh Bisht, Kamal Kishor

Language: English

Topic: Cardiac Arrhythmias and Treatments

Subfield: Cardiology and Cardiovascular Medicine

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $550

OpenAlex ID: W4416414092

FWCI:

Cites: 3

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