Distal type of nodo‐ventricular pathway: Unique electrophysiological characteristics mimicking fasciculo‐ventricular pathway

Fasciculo‐ventricular and nodo‐ventricular pathways (FVP and NVP) are rare preexcitation variants. Normally, NVP is electrophysiologically different from FVP. We describe a unique type of NVP emerging from the distal part of the slow pathway, designated as “distal type” NVP. The distal type NVP rese...

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Bibliographic Details
Published in:Pacing and clinical electrophysiology 2022-07, Vol.45 (7), p.900-903
Main Authors: Uetake, Shunsuke, Maruyama, Mitsunori, Miyauchi, Yasushi, Shimizu, Wataru
Format: Article
Language:English
Subjects:
accessory pathway, fasciculo‐ventricular, nodo‐ventricular, preexcitation, supraventricular tachycardia
Ventricle
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Summary:Fasciculo‐ventricular and nodo‐ventricular pathways (FVP and NVP) are rare preexcitation variants. Normally, NVP is electrophysiologically different from FVP. We describe a unique type of NVP emerging from the distal part of the slow pathway, designated as “distal type” NVP. The distal type NVP resembled FVP but was proven by unexpected elimination of the NVP during the slow pathway ablation. Also, NVP was distinguishable from FVP by a careful comparison of the HV intervals during conduction over the fast and slow pathways. Demonstration of this novel type NVP provides insights into how the insertion site of NVP affects its electrophysiologic behaviors.
ISSN:0147-8389
1540-8159
DOI:10.1111/pace.14468