• Pharmacotherapy · Apr 2006

    High prevalence of previous antiplatelet drug use in patients with new or recurrent ischemic stroke: Buffalo metropolitan area and Erie County stroke study.

    • Adnan I Qureshi, Jawad F Kirmani, Adnan Safdar, Shafiuddin Ahmed, Muhammad A Sayed, Ravi U Pande, Richard Ferguson, Linda A Hershey, and Khalid J Qazi.
    • Zeenat Qureshi Stroke Research Center, University of Medicine and Dentistry of New Jersey, New Jersey Medical School, Newark, New Jersey 07103, USA. aiqureshi@hotmail.com
    • Pharmacotherapy. 2006 Apr 1;26(4):493-8.

    Study ObjectiveTo determine the proportion of patients in a large metropolitan population who developed ischemic stroke despite having received antiplatelet drug therapy, and their associated characteristics and in-hospital outcomes.DesignRetrospective, cross-sectional study.SettingEleven hospitals in western New York State.PatientsOne thousand five hundred eighty-two patients with new or recurrent ischemic stroke who were admitted to one of the 11 study hospitals between January 1 and December 31, 2000, and for whom data were available regarding previous drug therapy.Measurements And Main ResultsThe proportion of patients taking antiplatelet drugs before the onset of stroke was determined. Demographic and clinical characteristics, stroke subtypes, in-hospital bleeding complications, mortality, and discharge drugs were compared between patients with and those without previous antiplatelet drug use. Previous use of antiplatelet drugs was observed in 642 (41%) of the 1582 patients admitted with ischemic stroke. The antiplatelet drugs were aspirin alone (494 patients), clopidogrel alone (70), aspirin and clopidogrel (36), aspirin in combination with other antiplatelet drugs (20), and others (22). Patients with previous use of antiplatelet drugs were older and more likely to have hypertension, diabetes mellitus, hyperlipidemia, and a history of cardiovascular disease. The proportion of patients with large-vessel disease was greater among patients with previous use of antiplatelet drugs. Patients with previous use of antiplatelet drugs were more likely to be discharged with aspirin, clopidogrel, and an aspirin-dipyridamole combination.ConclusionThe relatively high proportion of patients who developed ischemic stroke despite taking antiplatelet drugs observed in this regional hospital-based study mandates clinical trials specifically addressing therapeutic intervention for this group of patients.

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