Percutaneous Left Atrial Appendage Closure: Current Evidence and Procedural Insights

Area of Science:

• Cardiology
• Interventional Cardiology
• Medical Devices

Background:

• Atrial fibrillation (AF) is a leading cause of cardioembolic stroke, with the left atrial appendage (LAA) as the primary thrombus site.
• Oral anticoagulation (OAC) is standard for stroke prevention but has contraindications and bleeding risks.
• Percutaneous left atrial appendage closure (LAAC) is an emerging device-based alternative to OAC.

Purpose of the Study:

• To review current evidence on LAAC procedures.
• To provide a procedural roadmap for LAAC.
• To discuss expanding indications and future research directions for LAAC.

Main Methods:

• Review of current evidence on LAAC.
• Step-by-step procedural guide from imaging to device release.
• Discussion of imaging modalities, device selection, and post-procedural strategies.

Main Results:

• LAAC is an effective device-based alternative for stroke prevention in AF.
• Advances in imaging and technology improve LAAC efficacy and safety.
• Indications for LAAC are expanding to include complex patient groups.

Conclusions:

• LAAC is a valuable option for stroke prevention in AF patients unsuitable for OAC.
• Ongoing research aims to optimize post-LAAC antithrombotic strategies and patient selection.
• LAAC's role in AF management is evolving with technological and clinical advancements.