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Updated: Jul 19, 2026
The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Left Atrial Appendage Occlusion: Expanding Indications and New Developments
Grant W Reed1, Shady Nakhla1, Rhonda Miyasaka1
1Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, Ohio.
Insights
Percutaneous left atrial appendage occlusion (LAAO) offers a safe alternative to anticoagulation for stroke prevention in atrial fibrillation. This review covers LAAO
Area of Science:
- Cardiology
- Interventional Cardiology
- Medical Device Technology
Background:
- Percutaneous left atrial appendage occlusion (LAAO) is guideline-recommended for stroke prevention in nonvalvular atrial fibrillation (NVAF).
- Advancements in LAAO devices enhance safety and procedural success, expanding potential indications.
- Growing evidence supports LAAO as an alternative to oral anticoagulation, particularly for high-bleeding risk patients.
Purpose of the Study:
- To provide a comprehensive review of LAAO, including historical context, recent updates, and future developments.
- To offer practical guidance for managing patients undergoing LAAO.
- To highlight evolving therapeutic strategies and procedural considerations.
Main Methods:
- Review of recent clinical data comparing antiplatelet versus antithrombotic therapy post-LAAO.
- Analysis of emerging trial data on concomitant LAAO during structural heart and electrophysiology procedures.
- Discussion of practical considerations for procedural guidance using echocardiography (TEE/ICE).
Main Results:
- Recent data informs optimal post-LAAO antithrombotic strategies.
- Concomitant LAAO shows promise during other cardiac interventions.
- Echocardiographic guidance is crucial for procedural success.
Conclusions:
- LAAO is a rapidly evolving field with expanding applications and refined management strategies.
- This review serves as a primer for understanding current and future advances in LAAO.
- Continued research will further define the role of LAAO in stroke prevention.
Abstract:
Percutaneous left atrial appendage occlusion (LAAO) is recommended in several major international society guidelines as a viable alternative to therapeutic anticoagulation for the prevention of ischemic stroke in patients with nonvalvular atrial fibrillation or flutter. Recent innovations in device development have improved the safety and procedural success of LAAO, further fueling enthusiasm for expanding its indications beyond patients with high-bleeding risk from oral anticoagulation use. It is the aim of this review to provide historical context in addition to recent updates and upcoming developments and provide practical suggestions on how best to care for patients who are candidates for LAAO in contemporary practice. Recent data comparing the safety and efficacy of post-LAAO antiplatelet vs. antithrombotic therapy will be highlighted, with specific recommendations regarding which patients are best suited for each strategy. We will also address the safety and practical considerations provided by emerging trials on concomitant LAAO during other structural heart interventions such as transcatheter aortic valve replacement and mitral valve interventions, as well as electrophysiology procedures including catheter ablation for atrial fibrillation and pacemaker implantation. Practical considerations for the use of transesophageal echocardiography or intracardiac echocardiography for procedural guidance will also be discussed. As the evidence supporting LAAO continues to evolve, this review will serve as a primer on the recent and upcoming advances in device technology and management strategies positioned to further push LAAO forward into the future.
