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Aspirin and clopidogrel resistance: methodological challenges and opportunities

Author(s): Armen Yuri Gasparyan

Journal: Vascular Health and Risk Management ISSN 1176-6344
Volume: 2010; Issue: default; Start page: 109; Date: 2010;
Original page

ABSTRACT
Armen Yuri GasparyanClinical Research Unit, Russell’s Hall Hospital, Dudley Group of Hospitals NHS Foundation Trust, West Midlands, UKAbstract: Antiplatelet drug resistance is one of the urgent issues in current cardiovascular medicine. Many platelet function tests have been used to define responsiveness of patients with cardiovascular disease to aspirin and clopidogrel. In most studies, cut-off values of platelet function tests for defining responsiveness to antiplatelets were chosen arbitrarily. Different tests provided wide-ranging figures of the prevalence of aspirin and clopidogrel resistance, suggesting poor correlation between currently available platelet function tests. Measurement of platelet size seems to be a promising approach for monitoring antiplatelet drug therapy. This commentary highlights some limitations of studies on aspirin and clopidogrel resistance in patients undergoing coronary interventions.Keywords: aspirin, clopidogrel, resistance, cardiovascular disease, platelet function tests