Arrhythmias of the Left Atrial Appendage: Approaches to the Definitive Management of Atrial Tachycardia from the LAA Stump

Abstract

The left atrial appendage (LAA) is now recognized as a significant contributor to arrhythmia and thromboembolism in patients with a history of atrial fibrillation. Thoracoscopic exclusion of the LAA is made possible with the AtriClip device. In this report, we describe the case of a 65-year-old man with history of multiple left atrial ablation procedures and LAA clipping. He developed a microreentrant atrial tachycardia originating from the anterior base of the LAA stump, underwent complete isolation of the LAA, and had subsequent resolution of arrhythmogenic activity from the residual LAA stump.

Keywords: AtriClip; Atrial tachycardia; Left atrial appendage; Stump isolation.