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Radiofrequency Ablation of Idiopathic Left Anterior Fascicular Tachycardia
Author(s) -
BOGUN FRANK,
ElATASSI RAFEL,
DAOUD EMILE,
MAN K. CHING,
STRICKBERGER S. ADAM,
MORADY FRED
Publication year - 1995
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.1540-8167.1995.tb00389.x
Subject(s) - medicine , right bundle branch block , cardiology , sinus rhythm , catheter ablation , ventricular tachycardia , ablation , ventricle , left axis deviation , qrs complex , tachycardia , radiofrequency ablation , radiofrequency catheter ablation , left bundle branch block , electrocardiography , atrial fibrillation , heart failure
Left Anterior Fascicular Tachycardia. Introduction: A 45‐year‐old man with idiopathic ventricular tachycardia (VT) having a right bundle branch block configuration with right‐axis deviation underwent au electrophysiologic test. Methods and Results: Mapping demonstrated a site on the auterobasal wall of the left ventricle where there was an excellent pace map and an endocardial activation time of ‐20 msec, hut radiofrequency catheter ablation at this site was unsuccessful. At a nearby site, a presumed Purkinje potential preceded the QRS complex by 30 msec during VT and sinus rhythm, and catheter ablation was effective despite a poor pace map and an endocardial ventricular activation time of zero. Conclusion: Idiopathic VT with a right bundle branch configuration and right‐axis deviation may originate in the area of the left anterior fascicle. A potential presumed to represent a Purkinje potential may he more helpful than endocardial ventricular activation mapping or pace mapping in guiding ablation of this type of VT.