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Updated: Feb 3, 2026

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
Published on: February 26, 2013
A case of ventricular ectopy eliminated by catheter ablation: Diversity of the potentials on the left coronary cusp
Takatsugu Kajiyama1, Hitoshi Hachiya1, Yoshito Iesaka1
1Cardiovascular Center Tsuchiura Kyodo Hospital Tsuchiura Ibaraki Japan.
Abstract:
An 18-year-old man without organic heart disease underwent catheter ablation for frequent monomorphic ventricular ectopic beats(VEBs). The origin of the VEB was presumed located on the left coronary cusp(LCC) regarding his electrocardiography. Local activation in the right ventricular outflow tract was not so early. On the LCC, four different prepotentials were obtained by slight relocation of the catheter. Finally, on the site with positive discrete prepotential recorded on the distal electrodes, an application of radiofrequency current immediately eliminated the VEB. Although LCC is considered as a small structure, detailed mapping may be important to find the most optimal ablation site.
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