Successful ablation of focal atrial tachycardia originating from the left atrial appendage using 23-mm second-generation cryoballoon

Abstract

Focal atrial tachycardias (AT) originating from the left atrial appendage (LAA) constitute a minor part of all ATs. However, successful catheter ablation in these foci remains challenging owing to the complexity of the LAA anatomy, and sometimes even surgical LAA excision or epicardial ablation are required to eliminate the AT.1, 2 Cryoballoon (CB) is a safe and effective tool to achieve pulmonary vein isolation. Recently, the second-generation CB (CB2) has been used to perform the isolation of LAA in addition to pulmonary vein isolation during the atrial fibrillation (AF) ablation.3 However, there are no data available regarding CB2 ablation of the AT originating from the LAA. We described a case of 23-mm CB2 ablation of AT originating from the LAA without LAA isolation.