[Percutaneous left atrial appendage occlusion for thromboembolism protection in patients with atrial fibrillation]

Area of Science:

• Cardiology
• Interventional Cardiology
• Electrophysiology

Background:

• Atrial fibrillation (AF) is a prevalent arrhythmia linked to significant thromboembolic risks.
• Many AF patients who could benefit from oral anticoagulation (OAC) remain untreated due to various reasons.
• Left atrial appendage (LAA) closure offers an alternative strategy for thromboembolism risk reduction in specific patient groups.

Purpose of the Study:

• To evaluate the efficacy and safety of LAA closure as an alternative to OAC in AF patients.
• To assess the role of LAA closure in patients with contraindications to long-term OAC.
• To review current evidence and ongoing trials regarding LAA occlusion.

Main Methods:

• Analysis of data from large randomized trials comparing LAA closure to OAC.
• Review of large-scale registries evaluating LAA closure in real-world patient populations.
• Consideration of ongoing clinical trials investigating LAA occlusion techniques and post-procedural management.

Main Results:

• LAA closure demonstrated non-inferior efficacy compared to OAC in preventing thromboembolic events.
• The procedure significantly reduced the incidence of hemorrhagic complications.
• Registry data indicate promising outcomes for patients with contraindications to long-term OAC.

Conclusions:

• LAA closure is a viable and effective alternative to OAC for selected AF patients.
• The technique offers a significant reduction in thromboembolic risk, particularly in patients unable to tolerate long-term anticoagulation.
• Further research and clinical trials are essential to optimize patient selection and post-procedural care for LAA occlusion.