double-blind, randomized, placebo-controlled, two-by-two factorial trial involving patients with mild ischemic stroke or high-risk transient ischemic attack (TIA) of presumed atherosclerotic cause who had not undergone thrombolysis or thrombectomy
patients were randomly assigned, in a 1:1 ratio, within 72 hours after symptom onset to receive clopidogrel (300 mg on day 1 and 75 mg daily on days 2 to 90) plus aspirin (100 to 300 mg on day 1 and 100 mg daily on days 2 to 21) or matching clopidogrel placebo plus aspirin (100 to 300 mg on day 1 and 100 mg daily on days 2 to 90)
total of 6100 patients were randomly assigned to receive clopidogrel plus aspirin or matching clopidogrel placebo plus aspirin within 72 hours after symptom onset
Study results showed:
among patients with mild ischemic stroke or high-risk TIA of presumed atherosclerotic cause, combined clopidogrel–aspirin therapy initiated within 72 hours after stroke onset led to a lower risk of new stroke at 90 days than aspirin therapy alone but was associated with a low but higher risk of moderate-to-severe bleeding
Reference:
Gao Y et al. Dual Antiplatelet Treatment up to 72 Hours after Ischemic Stroke. NEJM December 28th 2023.
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