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Updated: Sep 8, 2025

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
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Optimal Timing of Anticoagulation Initiation in Stroke Patients With Atrial Fibrillation: A Systematic Review

Shaima Yasmeen Tariq1, Ali Raza Ahmad2

  • 1Cardiology, Sahiwal Teaching Hospital, Sahiwal, PAK.

Cureus
|August 20, 2025
PubMed

Insights

Starting anticoagulation early for atrial fibrillation patients after stroke or TIA, particularly with direct oral anticoagulants (DOACs), appears safe and may reduce recurrent events without increasing hemorrhage risk.

Area of Science:

  • Cardiology
  • Neurology
  • Pharmacology

Background:

  • Atrial fibrillation increases stroke risk.
  • Optimal anticoagulation timing post-stroke/TIA is debated.
  • Balancing recurrent ischemic events and bleeding risk is crucial.

Purpose of the Study:

  • To systematically review the optimal timing of anticoagulation in atrial fibrillation patients with acute ischemic stroke or transient ischemic attack.
  • To compare early versus delayed initiation of oral anticoagulants.
  • To evaluate outcomes including recurrent stroke and intracranial hemorrhage.

Main Methods:

  • Systematic review of 5 randomized controlled trials and 8 cohort studies.
  • Searched PubMed, Web of Science, Scopus, and Cochrane Library.
  • Included studies comparing early vs. delayed anticoagulation initiation.

Main Results:

  • Early anticoagulation, especially with direct oral anticoagulants (DOACs), is associated with reduced recurrent events.
  • Early initiation did not significantly increase symptomatic intracranial hemorrhage (sICH) risk in mild-to-moderate strokes.
  • Findings suggest safety and potential benefit of early anticoagulation.

Conclusions:

  • Early anticoagulation, particularly with DOACs, is a safe and potentially effective strategy for atrial fibrillation patients post-stroke/TIA.
  • Further research is needed for severe strokes and in resource-limited settings.
  • Refining guidelines requires investigating long-term outcomes and diverse populations.

Keywords:
anticoagulationatrial fibrillationintracranial hemorrhageischemic strokestroketimingwarfarin

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