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  • Title: Intracoronary infusion of streptokinase in patients with acute myocardial infarction: effects of reperfusion on left ventricular performance.
    Author: Reduto LA, Smalling RW, Freund GC, Gould KL.
    Journal: Am J Cardiol; 1981 Sep; 48(3):403-9. PubMed ID: 7270447.
    Abstract:
    Cardiac catheterization and coronary angiography were performed on hospital admission in 32 consecutive patients with acute myocardial infarction. Twenty-six patients had total occlusion of an infarct-related coronary artery and six had severe proximal stenosis with poor distal flow. In 18 of the 26 patients with total occlusion, intracoronary infusion of streptokinase resulted in reperfusion of the distal coronary artery. Seventeen of these 18 patients had severe coronary arterial stenosis at the site of the previous total occlusion. Hemodynamic indexes of left ventricular performance and ejection fraction determined by gated cardiac blood pool imaging did not change immediately after reperfusion (p [probability] = not significant [NS]). The mean (+/- standard deviation) left ventricular ejection fraction increased significantly (p = 0.007) from admission (44 +/- 15 percent) to hospital discharge (55 +/- 7 percent) in patients evidencing reperfusion of the occluded coronary artery. It did not change (p = NS) in this time span in the patients with severe stenosis alone, in those with total occlusion not demonstrating reperfusion after administration of streptokinase or in an additional 10 control patients with acute myocardial infarction not evaluated with coronary angiography. These data suggest that (1) coronary arterial thrombus is frequent in acute myocardial infarction and can be lysed by intracoronary streptokinase; (2) reperfusion with intracoronary streptokinase in acute myocardial infarction results in improved left ventricular performance between admission and hospital discharge.
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