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Retrograde Purkinje Potential Activation During Sinus Rhythm Following Catheter Ablation of Idiopathic Left Ventricular Tachycardia
Author(s) -
TADA HIROSHI,
NOGAMI AKIHIKO,
NAITO SHIGETO,
TOMITA TOMOYUKI,
OSHIMA SHIGERU,
TANIGUCHI KOICHI,
AONUMA KAZUTAKA,
IESAKA YOSHITO
Publication year - 1998
Publication title -
journal of cardiovascular electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.193
H-Index - 138
eISSN - 1540-8167
pISSN - 1045-3873
DOI - 10.1111/j.1540-8167.1998.tb00095.x
Subject(s) - medicine , cardiology , sinus rhythm , catheter ablation , ventricular tachycardia , ablation , qrs complex , tachycardia , reentry , verapamil , anesthesia , atrial fibrillation , calcium
Idiopathic Left VT and Purkinje Potentials . We describe two patients with idiopathic left ventricular tachycardia that were cured by radiofrequency catheter ablation. Tachycardia was inducible by ventricular stimulation and was verapamil sensitive. Two distinct presystolic potentials (PI and P2) were recorded during tachycardia in the mid‐septal or inferoapical area, but only one potential (P2) was recorded during sinus rhythm. After catheter ablation at this site, the PI potential was noted after the QRS complex during sinus rhythm, while the P2 was still observed before the QRS complex. The P1 potential showed a decremental property during atrial or ventricular pacing. These data suggest that Purkinje tissue with decremental properties was responsible for the tachycardia mechanism, and that the reentry circuit involving this tissue is likely to be of considerable size.