Efficacy and Safety on Prouk for STEMI Patients in China

Inclusion Criteria: * Chest pain \> 30 minutes, while \<12 hours * Expected PCI related delayed time \> 60 minutes, OR Door To Balloon time \>90 minutes * ECG confirmed STEMI. * Age: 18--75 years old * Weight \<=85Kg * Consent to participate in this study Exclusion Criteria * Evidence of cardiac rupture; * ECG: new left bundle branch block; * Thrombolysis contradictions * Any history of central nervous system damage (i.e. neoplasm, aneurysm, intracranial or spinal surgery) or recent trauma to the head or cranium (i.e. \< 3 months); * Active bleeding or known bleeding disorder. * Recent administration of any i.v. or s.c. anticoagulation within 12 hours includingunfractionated heparin, enoxaparin and/or bivalirudin or current use of oral anticoagulation(warfarin or coumadin); * Uncontrolled hypertension, defined as a single blood pressure measurement ≥ 180/110 mm Hg (systolic BP ≥ 180 mm Hg and/or diastolic BP ≥ 110 mm Hg) prior to randomisation; * Major surgery, biopsy of a parenchymal organ, or significant trauma within the past 2 months (this includes any trauma associated with the current myocardial infarction); Prolonged or traumatic cardiopulmonary resuscitation (\> 10 minutes) within the past 2 Weeks Major surgery pending in the following 30 days;