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Updated: Aug 16, 2026

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Atrial fibrillation: preventing thromboembolism and choosing nondrug therapies
1Department of medicine, Albert Einstein Medical Center, Philadelphia, USA.
Insights
Atrial fibrillation (AF) increases stroke risk. Stroke prevention in AF involves aspirin for low-risk patients and anticoagulation with warfarin for others, while cardioversion and pacemakers manage rhythm disturbances.
Area of Science:
- Cardiology
- Neurology
Background:
- Atrial fibrillation (AF) is a significant risk factor for stroke.
- Current guidelines recommend specific treatments for stroke prevention and rhythm management in AF patients.
Purpose of the Study:
- To outline current therapeutic strategies for managing atrial fibrillation and its complications.
- To review established and emerging treatments for stroke prevention and rhythm control in AF.
Main Methods:
- Review of current American Heart Association guidelines for AF management.
- Summary of pharmacological (aspirin, warfarin) and procedural (cardioversion, pacemakers, ablation, surgery) interventions.
- Discussion of potential complications associated with treatments.
Main Results:
- Aspirin is recommended for low-risk AF patients for stroke prevention.
- Warfarin anticoagulation (target INR 2-3) is recommended for higher-risk patients, with a 0.3% intracranial hemorrhage risk.
- Direct current cardioversion is a primary treatment for recent AF rhythm restoration.
- Pacemakers and radiofrequency ablation offer solutions for conduction disturbances and symptomatic AF relief.
- Surgical interventions like maze procedures are under development.
Conclusions:
- Stroke prevention and rhythm management in AF require individualized treatment strategies.
- A range of medical and interventional options exist, each with specific indications and potential risks.
- Ongoing research aims to improve surgical and interventional approaches for AF treatment.
Abstract:
A major consequence of atrial fibrillation (AF) is stroke. For stroke prevention in AF, the American Heart Association recommends aspirin, 325 mg/d, for low-risk patients. For all others, anticoagulation with warfarin to a target INR of 2 to 3 is recommended if warfarin is not contraindicated. Approximately 0.3% of patients receiving warfarin suffer intracranial hemorrhage. For restoration of sinus rhythm in recent AF, direct current cardioversion is the treatment of choice if a trial of antiarrhythmic drug therapy has failed or is contraindicated. Potential complications include thromboembolism, ventricular arrhythmia, and pulmonary edema. Permanent pacemakers can be used to control conduction disturbances such as sick sinus syndrome and to prevent paroxysmal AF. Radiofrequency AV nodal ablation provides symptomatic relief for some patients with chronic or paroxysmal AF. Surgical techniques are also being developed for AF. These include left atrial isolation and the corridor and maze procedures.
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