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Updated: Feb 25, 2026

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
Published on: February 26, 2013
Focal ablation for atrial tachycardia from the double-exit of the Marshall bundle inducing atrial fibrillation
Jung Yeon Chin1, Jong Woo Kim1, Ki-Woon Kang1
1Division of Cardiology, Eulji University Hospital, Eulji University School of Medicine, Daejeon, Republic of Korea.
Abstract:
Atrial fibrillation (AF) from the ligament/vein of Marshall (LOM/VOM) has previously been described. We report the case of a 23-year-old woman with an antiarrhythmic drug-resistant AF induced by two distinct atrial tachycardias (ATs). Focal ablation of these ATs from the double-exit of the Marshall bundle using a three-dimensional map eliminated AF triggering, even though pulmonary vein electrical isolation is the cornerstone for paroxysmal AF. Such mechanisms are important as triggering factors to plan ablation for paroxysmal AF. Focal ablation for triggering and inducing AF, originating from the double-exit of the Marshall bundle may be effective in eliminating AF in young patients.
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