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Aspirin or heparin in acute stroke Pereira AC; Brown MMBr Med Bull 2000[]; 56 (2): 413-21Acute stroke treatment using aspirin and/or heparin was studied in the International Stroke Trial (IST) and Chinese Acute Stroke Trial (CAST) which randomised over 40,000 patients altogether. Combining the results demonstrated that aspirin (150-300 mg) given within 48 h of the onset of stroke produced a small but significant improvement in outcome (death or dependency) 4 weeks to 6 months after stroke of about 1 patient per 100 treated. There was a significant reduction in recurrent ischaemic stroke of similar degree, which was not associated with significant increase in cerebral haemorrhage. Therefore, aspirin should be used as early secondary prevention against recurrent stroke, after excluding cerebral haemorrhage by scanning the patient. Heparin does not improve clinical outcome after stroke even in patients in atrial fibrillation. It decreased recurrent ischaemic stroke significantly in IST, but at the cost of a significant increase in cerebral haemorrhage. Low molecular weight heparins and heparinoids have not proved any more beneficial. Therefore, heparin does not appear to be a useful routine therapy in acute stroke. The use of heparin should, therefore, be limited to patients at high risk of deep vein thrombosis or early recurrence.|Acute Disease[MESH]|Aspirin/*therapeutic use[MESH]|Fibrinolytic Agents/*therapeutic use[MESH]|Heparin/*therapeutic use[MESH]|Humans[MESH]|Platelet Aggregation Inhibitors/*therapeutic use[MESH]|Randomized Controlled Trials as Topic[MESH]|Stroke/*drug therapy[MESH] |
