Open AccessSuccessful catheter ablation of premature ventricular contractions originating from the anterior fascicle of the left bundle branch in a patient with hypertrophic cardiomyopathy
Author(s) -
Sonoda Kazumasa,
Okumura Yasuo,
Watanabe Ichiro,
Nagashima Koichi,
Mano Hiroaki,
Kofune Masayoshi,
Kunimoto Satoshi,
Ohkubo Kimie,
Nakai Toshiko,
Hirayama Atsushi
Publication year - 2013
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.2012.10.005
Subject(s) - medicine , cardiology , qrs complex , ventricular tachycardia , ventricle , catheter ablation , hypertrophic cardiomyopathy , ejection fraction , left bundle branch block , intracardiac injection , right bundle branch block , electrocardiography , ablation , heart failure
A 73‐year‐old man with hypertrophic cardiomyopathy was referred for an electrophysiologic study and catheter ablation of premature ventricular contractions (PVCs)/nonsustained ventricular tachycardia (NSVT). The QRS morphology of the PVCs was right bundle branch block with an inferior axis. Transthoracic echocardiography showed left ventricular hypertrophy and a normal left ventricular ejection fraction without any obstruction in the left ventricle (LV). Intracardiac mapping showed that the earliest activation site of the PVCs was within the anterior portion of the basal LV, where a Purkinje potential preceded the QRS onset by 32 ms. Radiofrequency application at that site terminated the PVCs. The PVCs/NSVT did not recur during 10 months of follow‐up.