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Updated: Aug 8, 2026

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
23:33

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation

Published on: February 28, 2012

[Acetylsalicylic acid versus coumarin derivatives in atrial fibrillation]

F W Verheugt1

  • 1Universitair Medisch Centrum St. Radboud, Hartcentrum, afd. Cardiologie, Postbus 9101, 6500 HB Nijmegen. f.verheugt@cardio.azn.nl

Nederlands Tijdschrift Voor Geneeskunde
|December 29, 2000
PubMed

Insights

Atrial fibrillation increases stroke risk. Low-risk patients benefit from aspirin, while higher-risk individuals require coumarin derivatives for effective stroke prevention with an acceptable bleeding risk.

Area of Science:

  • Cardiology and Neurology
  • Pharmacology

Context:

  • Atrial fibrillation (AF) is a chronic cardiac arrhythmia.
  • AF significantly elevates stroke risk, influenced by factors like age, hypertension, and prior thromboembolism.

Purpose:

  • To outline stroke risk stratification in atrial fibrillation.
  • To delineate appropriate antithrombotic therapies based on stroke risk.

Summary:

  • Low-risk atrial fibrillation patients can be managed with acetylsalicylic acid (100-200 mg/day).
  • For patients with increasing stroke risk, coumarin derivatives offer superior efficacy over acetylsalicylic acid.
  • The recommended target International Normalized Ratio (INR) for coumarin therapy is 2.0-3.0, balancing efficacy and bleeding risk.

Impact:

  • Provides clear therapeutic guidelines for stroke prevention in atrial fibrillation.
  • Facilitates evidence-based clinical decision-making for managing atrial fibrillation-related stroke risk.
  • Highlights the importance of individualized treatment strategies based on patient risk profiles.

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