How is the risk of hemorrhagic stroke increased in patients on warfarin?

Updated: Apr 22, 2019
  • Author: David S Liebeskind, MD, FAAN, FAHA, FANA; Chief Editor: Andrew K Chang, MD, MS  more...
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Patients on warfarin have an increased incidence of hemorrhagic stroke. Morbidity and mortality for warfarin-associated bleeding is high, with over one half of patients dying within 30 days. Most episodes occur with a therapeutic international normalized ratio (INR), but overanticoagulation is associated with an even greater risk of bleeding.

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