Open AccessDissociated late potentials during sinus rhythm after radiofrequency ablation in a patient with postinfarction ventricular tachycardia
Author(s) -
Nakahara Shiro,
Hori Yuichi,
Kobayashi Sayuki,
Tsukada Naofumi,
Sakai Yoshihiko,
Takayanagi Kan
Publication year - 2014
Publication title -
journal of arrhythmia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.463
H-Index - 21
eISSN - 1883-2148
pISSN - 1880-4276
DOI - 10.1016/j.joa.2013.09.008
Subject(s) - medicine , cardiology , sinus rhythm , ventricular tachycardia , ablation , radiofrequency ablation , catheter ablation , rhythm , tachycardia , anesthesia , atrial fibrillation
A 72‐year‐old man with ischemic cardiomyopathy was admitted for the treatment of ventricular tachycardia (VT). Because his VT was poorly tolerated hemodynamically, substrate mapping was performed. The map revealed the presence of low‐voltage areas in the inferolateral wall of the LV. Late potentials (LPs) were recorded during sinus rhythm, and pacing at the site revealed a good pacemap for targeting the VT. Delivery of radiofrequency (RF) current to the area where LPs were recorded rendered the targeted VT noninducible. After RF delivery, dissociation of the LPs with an interval of 3140 ms was documented during sinus rhythm.