Inclusion Criteria:  Planned early revascularization by PCI (percutaneous coronary intervention) a) Systolic blood pressure (SBP) <90 mmHg for > 30 minutes, OR b) Use of drugs to maintain SBP > 90 mmHg at presentation before randomization. Signs of pulmonary congestion  Signs of impaired organ perfusion with at least one of the following criteria:  Altered mental status Cold, clammy skin and extremities Oliguria with urine output <30ml/hour Serum lactate >2.0 mmol/L  Exclusion Criteria:  Resuscitation >30 minutes No intrinsic heart action Cerebral deficit with fixed dilated pupils (not drug-induced) Mechanical cause of cardiogenic shock Onset of shock >12 hours Massive lung embolism Shock due to other cause (bradycardia, sepsis, hypovolemia, etc.)