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  • Title: A comparative study of coumadin and aspirin for primary cardioembolic stroke and thromboembolic preventions of chronic rheumatic mitral stenosis with atrial fibrillation.
    Author: Poungvarin N, Opartkiattikul N, Chaithiraphan S, Viriyavejakul A.
    Journal: J Med Assoc Thai; 1994 Jan; 77(1):1-6. PubMed ID: 7798824.
    Abstract:
    The comparative study of the efficacy of coumadin and aspirin in primary cardioembolic stroke prevention of chronic rheumatic heart disease (mitral stenosis) with atrial fibrillation was conducted at Siriraj Hospital, Mahidol University, Bangkok, Thailand. Seventy-nine patients were enrolled in the trial. Allocation of patients into coumadin or aspirin groups depended upon the patients' choice. Nineteen patients were given coumadin at the adjusted dosage to maintain the therapeutic range of International Normalised Ratio between 1.5-3. Sixty patients were given aspirin at the fixed dosage of 75 mg per day. Six patients were lost to follow-up over the 3 yr period; four in the aspirin group and 2 in the coumadin group. There were three patients with nonfatal cardioembolic stroke in the aspirin group but none in the coumadin group after three years of follow-up. Six patients had mitral valve replacement during the study (i.e. three patients in each group). There were complications in 12 patients, 10 in the aspirin (16.6 per cent) and 2 in the coumadin (10.5 per cent) group. The complications in coumadin group were minor bleeding over the thigh in one patient and generalised ecchymosis over the whole body in one other. In the aspirin group, the complication was gastrointestional symptoms, mainly epigastric pain, but no frank bleeding was observed. Primary prevention of cardioembolic stroke in chronic rheumatic heart disease was found to be more effective with coumadin than aspirin. Our study does not support the use of aspirin in primary prevention of cardiac embolism in chronic rheumatic heart disease.
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