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Updated: Jul 7, 2026

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
Published on: February 26, 2013
Oral anticoagulation after myocardial infarction
1Department of Internal Medicine, Ullevål University Hospital, Oslo, Norway. mehu@uus.no
Oral anticoagulants (OAC) are superior to aspirin for preventing thromboembolic events post-myocardial infarction (MI). Combined OAC and low-dose aspirin therapy offers benefits with adequate anticoagulation intensity and strict INR control.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Secondary prevention after myocardial infarction (MI) is crucial.
- Oral anticoagulants (OAC) are established therapies.
- The role of OAC in combination with aspirin requires further clarification.
Purpose of the Study:
- To review the efficacy and safety of OAC in secondary prevention post-MI.
- To evaluate the combination therapy of OAC and low-dose aspirin.
Main Methods:
- Review of large randomized clinical trials.
- Analysis of recently published trials and meta-analyses.
- Focus on thromboembolic events and bleeding complications.
Main Results:
- OAC demonstrated superiority over aspirin in reducing thromboembolic events post-MI.
- Combined OAC and low-dose aspirin therapy is beneficial with adequate anticoagulation (INR 2.0-2.5).
- Serious and fatal bleeding risks with combined therapy are comparable to OAC alone.
Conclusions:
- OAC are effective for secondary prevention post-MI.
- Combined OAC and low-dose aspirin therapy is a viable option with careful management.
- Patient compliance and strict International Normalized Ratio (INR) control are essential for optimal outcomes.
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