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Updated: Sep 12, 2025
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Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
Published on: January 18, 2018
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Anticoagulation Strategies Following Breakthrough Ischemic Stroke While on Direct Anticoagulants: A Meta-Analysis
Michele Romoli1, Maurizio Paciaroni2, Nicola Marrone3,4
1Department of Neurosciences, Neurology and Stroke Unit, Bufalini Hospital, AUSL Romagna, Cesena, Italy.
Neurology
|August 4, 2025
Summary
Switching from direct oral anticoagulants (DOACs) to warfarin after a stroke increases risks of recurrent stroke and intracranial hemorrhage (ICH). DOAC-based strategies are safer and more effective for preventing these outcomes.
Area of Science:
- Cardiology
- Neurology
- Pharmacology
Background:
- Management of anticoagulation after ischemic stroke in patients on direct oral anticoagulants (DOACs) presents a clinical challenge.
- Existing guidelines offer limited evidence on optimal anticoagulation strategies post-stroke for DOAC users.
- Controversy exists regarding switching to warfarin, changing DOACs, or adjusting dosage after stroke.
Purpose of the Study:
- To compare the effectiveness and safety of different anticoagulation strategies following ischemic stroke in patients on DOACs.
- To evaluate the impact of switching to warfarin, switching to another DOAC, changing DOAC dosage, and adding antiplatelets.
- To assess outcomes including recurrent ischemic stroke, intracranial hemorrhage (ICH), any stroke, and mortality.
Main Methods:
- An aggregate-data meta-analysis was conducted, systematically searching MEDLINE, Scopus, and Cochrane Library up to January 31, 2025.
- Included studies were randomized controlled trials and cohort studies (n ≥ 50) of adult ischemic stroke patients on DOACs.
- Random-effects modeling was used to pool risk ratios (RR) and 95% confidence intervals (CIs) for comparative outcomes.
Main Results:
- Switching to warfarin significantly increased the risk of recurrent ischemic stroke compared to maintaining the same DOAC (RR 1.80) or changing DOAC dosage (RR 1.72).
- Warfarin switch was associated with higher rates of ICH versus continuing the same DOAC (RR 2.90) or switching to another DOAC (RR 3.25).
- Continuing the same DOAC or switching to a different DOAC demonstrated similar rates for primary and secondary outcomes.
Conclusions:
- Switching to warfarin after ischemic stroke in DOAC users appears less effective and safe for preventing stroke recurrence and ICH.
- DOAC-based strategies, including maintaining the current DOAC or switching to another DOAC, are associated with better outcomes.
- The findings suggest a preference for DOAC-based management over warfarin transition in this patient population.
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