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Updated: Apr 5, 2026
Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
Published on: February 26, 2013
Left atrial appendage closure device in atrial fibrillation
Michael C Giudici1, Prashant D Bhave1
1Division of Cardiovascular Medicine, Department of Internal Medicine, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, Iowa City, IA 52242, USA.
Insights
Atrial fibrillation and stroke risks are complex. Left atrial appendage closure is a new stroke prevention method, but warfarin remains the proven standard of care.
Area of Science:
- Cardiology
- Neurology
- Medical Devices
Background:
- The relationship between atrial fibrillation and stroke is complex and evolving.
- Recent research questions the causal link and temporal sequence between these conditions.
- Warfarin has a 50-year history of use in stroke prevention for atrial fibrillation patients.
Purpose of the Study:
- To evaluate the current understanding of the stroke-atrial fibrillation relationship.
- To compare the established efficacy of warfarin with emerging left atrial appendage closure technologies.
- To determine the appropriate clinical context for considering left atrial appendage closure.
Main Methods:
- Review of recent scientific literature and clinical studies.
- Comparative analysis of warfarin therapy versus left atrial appendage closure.
- Assessment of clinical factors influencing treatment decisions for stroke prevention.
Main Results:
- The temporal relationship and causation between atrial fibrillation and stroke are increasingly debated.
- Left atrial appendage closure is a promising but unproven alternative to warfarin.
- Current evidence does not strongly support replacing warfarin with closure devices in stable patients.
Conclusions:
- Warfarin remains a well-established and effective therapy for stroke prevention in atrial fibrillation.
- Left atrial appendage closure presents an alternative but requires further validation.
- Discontinuing warfarin for closure devices is not routinely justified in patients without contraindications or complications.
Abstract:
The relationship of stroke and atrial fibrillation seems to become more complex as we gain more knowledge of the issue. Recent studies have questioned the temporal relationship between the two, which also questions causation. Left atrial appendage closure is an attractive, but unproven technology when compared with the 50-year experience with warfarin. In a patient who is on warfarin and having no issues with bleeding, medication intolerance, or lack of efficacy, it is difficult to justify stopping the drug and placing a closure device as sole therapy to prevent a stroke.
