Key result
Stepwise ablation and careful diagnostic maneuvers successfully resolve rare nodoventricular pathway-mediated tachycardia mimicking AVNRT.
Why the study?
SVT mediated by a nodoventricular or nodofascicular pathway with VA <70 ms initiated by AH jump is rare, and its electrophysiological characteristics remain poorly understood.
Case Report
Highlights the importance of diagnostic maneuvers and a cautious stepwise ablation approach for rare nodoventricular pathway-mediated SVT mimicking typical AVNRT.
Answers are grounded in this paper and cite their sources.
Demands diagnostic maneuvers in refractory AVNRT-like SVT; leaves open optimal ablation strategies pending larger series.
Atrioventricular nodal reentrant tachycardia (AVNRT) is a common cause of supraventricular tachycardia (SVT), with typical AVNRT involving a slow-fast pathway characterized by an AH jump and ventriculoatrial (VA) conduction of <70 ms.1 In contrast, SVT mediated by the nodoventricular or nodofascicular pathway with VA <70 ms initiated by AH jump is rare, and its electrophysiological (EP) characteristics remain poorly understood.1,2 Diagnostic maneuvers are essential for confirming the diagnosis and excluding typical AVNRT, and a cautious, stepwise ablation approach is necessary to minimize complications.
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Iqbal et al. (2025) conducted a case report in Nodoventricular pathway-mediated supraventricular tachycardia. Diagnostic maneuvers and stepwise ablation was evaluated. Diagnostic maneuvers and a cautious, stepwise ablation approach are essential for managing rare nodoventricular pathway-mediated supraventricular tachycardia mimicking typical AVNRT.
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