Comparison Between Iso-Osmolar and Ipo-Osmolar Contrast Agents in Patients With Acute Myocardial Infarction (AMI) Undergoing Primary Percutaneous Coronary Intervention (PCI)

Inclusion Criteria: * Men or women aged ≥ 18 * Patients with ST-elevation Myocardial Infarction presenting within 12 hours after the onset of symptoms (18 hours in case of cardiogenic shock), who are scheduled to undergo primary PCI * Patients who have signed and dated the written informed consent form Exclusion Criteria: * Patients in pregnancy or lactation * Long-term dialysis * Administration of any investigational drug within the previous 30 days * Intra-arterial or intravenous administration of iodinated contrast medium from 7 days before to 72 hours after the administration of study drug * Intake of any nephrotoxic medications 24 hours before or after the administration of study drug * Contraindications to the study drug or the cardiac catheterization procedure * Previous participation in this study * As the discretion of the investigator, the patient has any conditions not appropriate to the usage of iodinated contrast agent or not appropriate to undergo cardiac catheterization procedure