Premium
Successful Radiofrequency Catheter Ablation of Epicardial Left Ventricular Outflow Tract Tachycardia from the Anterior Interventricular Coronary Vein
Author(s) -
HIRASAWA YASUHIRO,
MIYAUCHI YASUSHI,
IWASAKI YUKI,
KOBAYASHI YOSHINORI
Publication year - 2005
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.1540-8167.2005.00257.x
Subject(s) - medicine , cardiology , radiofrequency ablation , great cardiac vein , ventricular outflow tract , radiofrequency catheter ablation , tachycardia , catheter ablation , qrs complex , ablation , left bundle branch block , ventricular tachycardia , right bundle branch block , coronary sinus , electrocardiography , heart failure
We report a case of idiopathic left ventricular outflow tract (LVOT) tachycardia that was eliminated by a radiofrequency application from the anterior interventricular coronary vein (AIV). The ECG exhibited QRS complexes with an inferior axis and atypical left bundle branch block pattern with an early transition of the precordial R waves at V3. Several radiofrequency applications from the coronary cusps and endocardial LVOT were not effective. Radiofrequency applications in the AIV, where the activation preceded the onset of the QRS by 30 msec, successfully eliminated the tachycardia. The AIV may be an optional site for radiofrequency ablation of idiopathic epicardial LVOT tachycardia.