Abstract
Purpose of review
Recurrent stroke after ischemic stroke (IS) or high-risk transient ischemic attack (TIA) increases morbidity and mortality. Secondary stroke prevention strategies include modification of behavioral and vascular risk factors and antithrombotic use, including single or dual antiplatelet therapy (DAPT). In this review, we focus on DAPT indications, combinations, and treatment duration.
Recent findings
Studies showed that for patients with mild to moderate non-cardioembolic strokes or those with symptomatic intracranial or mild extracranial stenosis (≤ 30% diameter reduction), short-term DAPT (21–90 days) with aspirin plus clopidogrel, compared with mono-antiplatelet therapy (MAPT), decreases recurrent stroke risk without significantly increasing major bleeding risk. The combination of aspirin plus extended release dipyridamole or cilostazol may confer decrease of risk for recurrent stroke with long-term use, at the expense of increasing major bleeding risk. Treatment with aspirin plus ticagrelor for a short time period is superior to aspirin monotherapy for decreasing risk for recurrent stroke, but significantly increases the risk for major bleeding.
Summary
Short-term DAPT with aspirin plus clopidogrel, compared with MAPT, decreases risk for recurrent stroke without increasing major bleeding risk. Short-term DAPT with aspirin plus ticagrelor also reduces risk for recurrent stroke, but with a significant increase in the risk of major bleeding, compared with MAPT. Direct comparisons among different DAPT regimens are currently underway.
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Dr. Gorelick has served as a member of a steering committee for a clinical trial of aspirin in first stroke and other primary cardiovascular prevention and has been a member of major cardiovascular event adjudication committees for AstraZeneca-sponsored studies. Dr. Testai receives private donations from Louis and Christine Friedrich. Dr. Trifan has nothing to disclose.
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Trifan, G., Testai, F.D. & Gorelick, P.B. Dual Antiplatelet Therapy in Ischemic Stroke Prevention: Which Two Could Be Better than One?. Curr Treat Options Neurol 23, 39 (2021). https://doi.org/10.1007/s11940-021-00694-0
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DOI: https://doi.org/10.1007/s11940-021-00694-0