Results from a Canadian study show that only 40% of ischaemic stroke patients who had atrial fibrillation (AF) had received warfarin before their stroke. Furthermore, three-fourths of patients who were taking warfarin were not taking adequate doses of the drug to prevent a stroke. The rest were taking other, less effective, medications or no medications at all for preventing blood clots and stroke. Overall, 90% of ischaemic stroke patients with known AF were not taking sufficient anticoagulants at the time of their stroke.
