Inclusion criteria:
ischemic tipic chest pain extending more than 30 min, STelevation more than 1 mm in at least 2 leads with the same name, all patients with STEMI candidate for primary PCI, myocardial infarction not extending more than 12 hours, having life expectancy not less than 6 months, consent for participation in the study, age 18 to 80 years, no evidence for prior myocardial infarction, not having contraindications for reteplase or eptifibatide, not having left bundle branch block, not using GPIIb/IIIa in recent two weeks.
Exclusion criteria:
rescue PCI after thrombolytic therapy, emergency CABG, cardiogenic shock, atrial fibrillation TIMI flow grade 3 in primary angiography(ie, having normal blood flow in coronary arteries) simultaneously presence in another intervention study