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Updated: May 6, 2026
The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Device-Assisted Left Atrial Appendage Exclusion: From Basic Sciences to Clinical Applications
Julia Izabela Karpierz1,2, Michał Piotrowski1, Krzysztof Bartuś1
1CAROL-Cardiothoracic Anatomy Research Operative Lab, Department of Cardiovascular Surgery and Transplantology, Institute of Cardiology, Jagiellonian University Medical College, 31-008 Krakow, Poland.
Insights
Device-assisted left atrial appendage exclusion is vital for preventing stroke in atrial fibrillation patients unable to use anticoagulation. This review details devices and outcomes for this crucial procedure.
Area of Science:
- Cardiology
- Medical Devices
- Surgical Procedures
Background:
- Atrial fibrillation increases stroke risk, especially in patients with contraindications to anticoagulation.
- Left atrial appendage (LAA) exclusion is a key strategy to prevent thromboembolic events.
- Various devices exist for LAA exclusion, each with unique safety profiles and complications.
Purpose of the Study:
- To review the anatomy, physiology, and function of the left atrial appendage.
- To discuss available epicardial and endocardial devices for LAA exclusion.
- To analyze the clinical outcomes associated with different LAA exclusion devices.
Main Methods:
- Comprehensive literature review of studies on left atrial appendage exclusion.
- Analysis of anatomical and physiological aspects of the LAA.
- Evaluation of device-related complications and clinical efficacy.
Main Results:
- Detailed description of LAA anatomy and function.
- Overview of current devices for epicardial and endocardial LAA exclusion.
- Discussion of the safety and effectiveness of various exclusion devices.
Conclusions:
- Device-assisted LAA exclusion is a critical intervention for selected atrial fibrillation patients.
- Understanding device-specific profiles is essential for optimal patient selection and outcomes.
- Further research is needed on long-term effects on homeostasis, coagulation, and cardiac function.
Abstract:
Device-assisted left atrial appendage exclusion plays a crucial role in the prevention of fatal ischemic complications in patients with atrial fibrillation and contraindications to anticoagulation treatment. Various devices with different safety profiles and device-related complications are available in daily practice to perform this procedure. In this review, the anatomy, physiology, and functions of the left atrial appendage were detailed, and all available devices used for epicardial and endocardial exclusion of the left atrial appendage and their clinical outcomes were discussed. Future research should aim to further investigate the long-term effects of left atrial appendage exclusion on body homeostasis, blood coagulation, and cardiac function.
