Catheter Ablation of Idiopathic Left Ventricular Outflow Tract Tachycardia Originating from the Left Sinus of Valsalva Experience of 11 Cases

Susumu Takase, Yasushi Mukai, Masao Takemoto, Shujiro Inoue, Akiko Chishaki, Kenji Sunagawa

Research output: Contribution to journalArticle

Abstract

It has been reported that ventricular outflow tract tachycardia (OT-VT) can be successfully ablated from the left sinus of valsalva (LSV) in some portion of cases, up to about 10 % of all idiopathic outflow tract tachycardia. We performed radiofrequency catheter ablation for OT-VT which was thought to be originating from LSV to 11 patients. 10 out of 11 cases were successfully ablated from the LSV Among 10 cases, 8 had isolated presystolic potentials preceding the QRS complex of PVC (P1 potential) at the anterior part of LSV and 9 cases had potentials following the QRS complex (P2 potential) during sinus rhythm. 8 in 9 cases P2 potentials disappeared or delayed after successful RFCA. Successful 10 cases had no recurrence for a follow-up period of 18± 15 months. Pace mapping could be performed at the RF deliver site only in 7 cases in which the captured QRS morphology completely matched the target PVC only in 4 cases. These observation suggested that RFCA at site with P1 and P2 potentials were associated with procedual and long-term clinical success in OT-VT targeted from the LSV.

Original languageEnglish
Journaljournal of arrhythmia
Volume27
DOIs
Publication statusPublished - Jan 1 2011

All Science Journal Classification (ASJC) codes

  • Cardiology and Cardiovascular Medicine

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