Left atrial appendage occlusion in atrial fibrillation: shaping the future of stroke prevention.

Abstract

Atrial fibrillation (AF) is the most common cardiac arrhythmia, significantly increasing the risk of thromboembolic events, particularly ischemic stroke. The left atrial appendage (LAA) is the predominant site of thrombus formation in patients with AF, making it a crucial target for stroke prevention strategies. Left atrial appendage occlusion (LAAO) has emerged as an important therapeutic alternative to oral anticoagulation, particularly in patients with contraindications to long-term anticoagulant therapy. This review examines the role of LAAO in AF management, discussing current indications, patient selection, procedural techniques, and clinical outcomes. We also explore the latest evidence from major clinical trials and real-world studies, highlighting the efficacy and safety of LAAO compared to standard anticoagulation. Additionally, we consider the unresolved questions and the potential future directions for this intervention, including emerging technologies and the integration of LAAO into broader AF management protocols. Our review underscores the growing importance of LAAO in reducing thromboembolic risk in AF patients, particularly those unable to tolerate traditional anticoagulation, and offers insights into the ongoing evolution of this treatment modality in clinical practice.