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Updated: Jul 19, 2026
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The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Atrial fibrillation and stroke prevention.
Puneet Kakar1, Gregory Y H Lip
1University Department of Medicine, City Hospital, Birmingham, B18 7QH, UK. puneetkakar@hotmail.com
Expert Review of Neurotherapeutics
|November 3, 2006
Summary
Thromboprophylaxis significantly reduces stroke risk in atrial fibrillation patients. Despite proven benefits of anticoagulation like warfarin, many eligible patients do not receive it, highlighting a need for improved stroke prevention strategies.
Area of Science:
- Cardiology
- Neurology
- Pharmacology
Background:
- Atrial fibrillation (AF) patients have a high risk of stroke.
- Thromboprophylaxis, particularly anticoagulation, is proven to reduce stroke risk in AF.
- Current oral anticoagulants have limitations, and suboptimal use is common.
Purpose of the Study:
- To review thromboprophylaxis in atrial fibrillation.
- To highlight opportunities for improving stroke prevention in AF patients.
Main Methods:
- Review of randomized trials and systematic reviews on thromboprophylaxis in AF.
- Analysis of warfarin and aspirin efficacy in stroke reduction.
- Examination of current prescribing patterns and challenges with oral anticoagulation.
Main Results:
- Warfarin reduces stroke by approximately 66% in moderate- to high-risk AF patients.
- Aspirin offers a 22% stroke reduction, comparable to antiplatelet therapy in vascular disease.
- Less than 50% of eligible AF patients receive warfarin, with frequent under- or overanticoagulation.
Conclusions:
- Suboptimal use of effective thromboprophylaxis in atrial fibrillation represents a significant missed opportunity for stroke prevention.
- Development of new oral anticoagulants aims to address limitations of existing therapies.
- Improving the provision of thromboprophylaxis is crucial for optimizing stroke risk management in AF.
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