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Anticoagulation after stroke: persistent uncertainties.

Bernhard M Siepen1,2, David J Seiffge1, Urs Fischer1,3

  • 1Department of Neurology, Inselspital University Hospital Bern and University of Bern.

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|November 23, 2021
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This summary is machine-generated.

Direct oral anticoagulants (DOACs) are crucial for preventing stroke in atrial fibrillation. Current research addresses uncertainties in timing, stroke causes, and bleeding risks, with ongoing trials promising improved patient management.

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Area of Science:

  • Cardiology
  • Neurology
  • Pharmacology

Background:

  • Direct oral anticoagulants (DOACs) are standard for stroke prevention in nonvalvular atrial fibrillation.
  • Significant uncertainties persist regarding optimal DOAC use in specific clinical scenarios.

Purpose of the Study:

  • To review current dilemmas in DOAC therapy for stroke prevention.
  • To discuss uncertainties based on recent clinical studies and ongoing trials.

Main Methods:

  • Review of selected studies focusing on DOAC therapy in atrial fibrillation and stroke.
  • Analysis of recent findings from randomized controlled trials and risk stratification scores.

Main Results:

  • Optimal timing for DOAC initiation post-ischemic stroke remains undetermined.
  • Stroke recurrence despite anticoagulation has varied causes, requiring etiological work-up.
  • DOACs showed no benefit in unselected embolic stroke of undetermined source (ESUS) patients; trials are investigating ESUS subgroups.
  • The MICON score aids in stratifying intracranial hemorrhage risk.

Conclusions:

  • Significant uncertainties persist in managing anticoagulation for stroke patients.
  • Ongoing clinical trials are expected to provide new data for improved patient care.