An overview of left atrial appendage occlusion devices

Area of Science:

• Cardiology
• Vascular Surgery

Background:

• Atrial fibrillation (AF) significantly increases the risk of thromboembolic events, particularly stroke.
• The left atrial appendage (LAA) is the primary source of thrombus formation in nonvalvular AF.
• Systemic anticoagulation is the traditional method to mitigate stroke risk but has limitations including poor tolerance and underutilization.

Purpose of the Study:

• To explore left atrial appendage (LAA) exclusion as an alternative to anticoagulation for stroke risk reduction in nonvalvular AF patients.
• To review emerging evidence on the efficacy of LAA exclusion techniques.

Main Methods:

• Review of percutaneous intracardiac, percutaneous epicardial, and surgical approaches for LAA exclusion.
• Analysis of emerging evidence on the effectiveness of these LAA exclusion methods.

Main Results:

• Left atrial appendage (LAA) exclusion is being utilized as a novel therapy for nonvalvular AF.
• Three primary techniques exist: percutaneous intracardiac, percutaneous epicardial, and surgical LAA exclusion.

Conclusions:

• Left atrial appendage (LAA) exclusion shows potential as an effective strategy to reduce stroke risk in patients with nonvalvular AF.
• Further evidence suggests LAA exclusion may be a viable alternative for patients who cannot tolerate or do not utilize anticoagulation.