The primary endpoint is ST resolution 90 minutes after opening of the affected vessel. Secondary endpoints include: Patency of the vessel at the first selective angiography, no reflow phenomenon during the procedure, TIMI 3 flow at the end of the procedure, MACE (death, reinfarction*, urgent TVR°) at 30 days, MACE (death, reinfarction*, TVR°) at 6 months, major bleeding requiring transfusion or surgery, or a reduction in Hb of more than 5 g%, Ictus and intracranial hemorrhage.