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Ridogrel does not increase the speed and rate of coronary recanalization in patients with myocardial infarction treated with alteplase and heparin.

Author(s): Tranchesi B, Pileggi F, Vercammen E, Van de Werf F, Verstraete M

Affiliation(s): Instituto do Coracao (INCOR), University of Sao Paulo, Brasil.

Publication date & source: 1994-05, Eur Heart J., 15(5):660-4.

Publication type: Clinical Trial; Randomized Controlled Trial

Ridogrel, a compound with the dual property of inhibiting the synthesis of thromboxane and blocking the receptors of thromboxane/prostaglandin/endoperoxides, has been shown to accelerate the speed of recanalization and to delay or prevent reocclusion during systemic thrombolysis with tissue plasminogen activator in experimental animals. Ninety patients who had not taken any antiplatelet drugs within the last 10 days were randomized to either intravenous ASA 250 mg immediately before the thrombolytic treatment and 100 mg once a day orally thereafter or ridogrel 300 mg i.v. before thrombolytic treatment and 300 mg b.i.d. orally thereafter. All patients were given intravenous heparin concomitantly with alteplase. The patency of the infarct-related artery was determined by coronary angiography before the administration of the thrombolytic agent and by repeated coronary angiography every 15 min until the end of the administration of alteplase. A final angiogram was obtained 48 to 72 h later. At 90 min, the recanalization and patency rates were the same in the two treatment groups with no intergroup difference in the speed of recanalization.

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