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Idiopathic Left Ventricular Tachycardia with Block Between Purkinje Potential and Ventricular Myocardium
Author(s) -
TOMOKUNI AKIRA,
TGAWA OSAMU,
YAMANOUCHI YUMI,
ADACHI MASAMITSU,
SUGA TOSHIMITSU,
YANO AKIO,
MIAKE JUNICHIRO,
INOUE YOSHIAKI,
FUJITA SHINYA,
HISATOME ICHIRO,
SHIGEMASA CHIAKI
Publication year - 1998
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1998.tb00286.x
Subject(s) - medicine , cardiology , ventricular tachycardia , tachycardia , catheter ablation , radiofrequency catheter ablation , purkinje fibers , ablation , radiofrequency ablation , anesthesia , electrophysiology
We performed radiofrequency current catheter ablation in a patient with idiopathic LV. While mapping the inferoapical LV septum during tachycardia, spontaneous termination of tachycardia was observed with block between Purkinje (P) potential and ventricular electrogram (P‐V block). The cycle length of the tachycardia was associated with prolongation of P‐P interval and P‐V interval. P potential recording at this site was earliest and at very low amplitude during tachycardia. The radiofrequency current at this site was successful. These findings indicated that Purkinje fiber was a critical part of the tachycardia circuit. Ablation was successful at a site where both an earliest and low amplitude P potential was recorded during tachycardia, and where P‐V block that was induced by catheter manipulation was observed during tachycardia.