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- W2146083057 abstract "Twenty-nine patients with acute myocardial infarction were treated with recombinant human tissue-type plasminogen activator (rt-PA). The incidence of acute coronary reocclusion and its prevention by a maintenance infusion of rt-PA were studied. Intravenous rt-PA was given at a rate of 0.4 to 0.75 mg/kg over 60 to 120 min after angiographic documentation of complete coronary occlusion. Reperfusion was accomplished within 1 hr in 24 of 29 patients (83%) and was associated with a decrease of the plasma fibrinogen level by 20%. In a first group of 13 patients, 11 of whom were successfully reperfused, prevention of reocclusion was attempted with heparin anticoagulation. However, acute reocclusion within 1 hr after cessation of rt-PA was demonstrated angiographically in five of these patients (45%). Quantitative angiographic analysis indicated that acute reocclusion only occurred in patients with 80% or greater residual stenosis. In patients with less than 80% residual stenosis, heparin anticoagulation was sufficient to maintain patency during the hospital stay in four of five patients. In a second group of patients (n = 16), 13 of whom underwent reperfusion with intravenous rt-PA, seven demonstrated a residual stenosis of 80% or greater. These patients were given heparin and, in addition, 10 mg of rt-PA per hour for 4 hr. None developed acute angiographic reocclusion or clinical signs of reocclusion during the hospital stay. Repeat angiography at 10 to 14 days confirmed persistent patency in six of the seven patients. The maintenance infusion resulted in only a moderate additional drop in fibrinogen, while a steady-state plasma rt-PA level of 750 +/- 250 ng/ml was maintained.(ABSTRACT TRUNCATED AT 250 WORDS)" @default.
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- W2146083057 date "1986-02-01" @default.
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- W2146083057 title "Acute coronary reocclusion after thrombolysis with recombinant human tissue-type plasminogen activator: prevention by a maintenance infusion." @default.
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- W2146083057 doi "https://doi.org/10.1161/01.cir.73.2.347" @default.
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