Radiofrequency Catheter Ablation of Left Ventricular Outflow Tract Tachycardia from the Coronary Cusp: A New Approach to the Tachycardia Focus

Transcoronary Cusp Ablation of VT. Introduction: Idiopathic ventricular tachycardia (VT) originating from the left ventricular outflow tract (LVOT) is rare. Previously reported were two cases of LVOT tachycardia which were treated with radiofrequency (RF) catheter ablation through endocardial aortom...

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Bibliographic Details
Published in:Journal of cardiovascular electrophysiology 1999-07, Vol.10 (7), p.1005-1009
Main Authors: SHIMOIKE, EIMEI, OHNISHI, YASUSHI, UEDA, NORIHIRO, MARUYAMA, TORU, KAJI, YOSHIKAZU
Format: Article
Language:English
Subjects:
Adult
catheter ablation
Catheter Ablation - methods
Catheterization, Peripheral - methods
Coronary Angiography
coronary cusp
Coronary Vessels
Echocardiography
Electrocardiography, Ambulatory
Follow-Up Studies
Humans
left ventricular outflow tract
Male
radiofrequency
Recurrence
Tachycardia, Ventricular - diagnosis
Tachycardia, Ventricular - physiopathology
Tachycardia, Ventricular - surgery
ventricular tachycardia
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Summary:Transcoronary Cusp Ablation of VT. Introduction: Idiopathic ventricular tachycardia (VT) originating from the left ventricular outflow tract (LVOT) is rare. Previously reported were two cases of LVOT tachycardia which were treated with radiofrequency (RF) catheter ablation through endocardial aortomitral continuity. We report here a case of a repetitive LVOT tachycardia in which the QRS morphology during VT exhibited an atypical left bundle branch block and inferior axis. Pace mapping revealed that the origin of this VT was very close to the left sinus of Valsalva. Transcoronary cusp RF catheter ablation abolished the VT in this patient and is a new approach for the treatment of this kind of VT. The application of this approach to the other types of VT has yet to he determined.
ISSN:1045-3873
1540-8167
DOI:10.1111/j.1540-8167.1999.tb01271.x