Key result
Second-generation 23-mm cryoballoon successfully ablates focal AT originating from the LAA.
Why the study?
Focal atrial tachycardias originating from the left atrial appendage are challenging to ablate due to complex anatomy, sometimes requiring surgical excision or epicardial ablation.
Case Report
The 23-mm second-generation cryoballoon may be a viable tool for ablating focal atrial tachycardias originating from the left atrial appendage.
Answers are grounded in this paper and cite their sources.
CB isolation of LAA may be feasible for focal AT; leaves open need for prospective trials on efficacy and safety.
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.
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Wei et al. (2019) conducted a case report in Focal atrial tachycardia originating from the left atrial appendage. 23-mm second-generation cryoballoon was evaluated. A 23-mm second-generation cryoballoon was successfully used for the ablation of focal atrial tachycardia originating from the left atrial appendage.
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