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Updated: May 26, 2026

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Cost-effectiveness of pharmacologic and invasive therapies for stroke prophylaxis in atrial fibrillation
Matthew D Solomon1, Aditya J Ullal, Donald D Hoang
1Veterans Affairs Palo Alto Healthcare System, Palo Alto, California 94304, USA.
Insights
Cost-effectiveness analysis (CEA) of atrial fibrillation stroke prevention strategies is crucial. This review examines CEA for pharmacologic and device-based therapies, informing clinical and health policy decisions for stroke risk reduction.
Area of Science:
- Cardiology
- Health Economics
- Preventive Medicine
Background:
- Atrial fibrillation (AF) is a common arrhythmia linked to a significant stroke burden.
- Current stroke prevention in AF involves anticoagulants (warfarin, novel agents) and antiplatelets.
- Non-pharmacologic options include left atrial appendage exclusion (surgical, percutaneous, device-based).
Purpose of the Study:
- To review the principles of cost-effectiveness analysis (CEA).
- To identify and synthesize existing CEA studies on stroke prevention in atrial fibrillation.
- To discuss the economic value of various prophylactic strategies, including emerging therapies.
Main Methods:
- Systematic literature review of CEA studies.
- Identification of 11 relevant articles examining stroke prophylaxis in AF.
- Analysis of studies evaluating aspirin, warfarin, novel oral anticoagulants, and device-based therapies.
Main Results:
- Most reviewed studies focus on aspirin and warfarin across different AF stroke risk levels.
- Emerging literature on direct thrombin inhibitors and their cost-effectiveness is discussed.
- The potential value of device-based stroke prevention therapies is considered.
Conclusions:
- CEA provides valuable insights for optimizing stroke prevention in atrial fibrillation.
- Evidence synthesis supports informed clinical and health policy recommendations.
- Further CEA is warranted for newer pharmacologic and device-based interventions in AF stroke prophylaxis.
Abstract:
Atrial fibrillation is an abnormal heart rhythm characterized by rapid, disorganized activation (fibrillation) of the left and right atria of the heart, and is responsible for 15% of 700,000 strokes in the United States each year. There are multiple pharmacologic and nonpharmacologic therapies used for stroke prevention in atrial fibrillation, including vitamin K antagonists such as warfarin, antiplatelet agents such as aspirin and clopidogrel, and newer agents such as dabigatran, rivaroxaban and apixaban. Nonpharmacologic therapies involve excluding the left atrial appendage from the systemic circulation by surgical ligation or excision, percutaneous ligation, or endovascular implantation of a left atrial occlusion device. Because atrial fibrillation-related stroke is preventable, a comparison of the value of these interventions by cost-effectiveness analysis (CEA) could inform clinical and health policy recommendations. In this article, we review the principles of CEA and identify 11 articles that examine CEA of stroke prophylaxis strategies in atrial fibrillation. Although most studies evaluate aspirin and warfarin across a variety of atrial fibrillation stroke risk profiles, we also review new literature on new pharmacologic therapies such as direct thrombin inhibitors and discuss the potential value of device-based therapies.
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