Study protocol Patients will be treated with 154 mEq/L of sodium bicarbonate and glucose 5% solution (infusion rate of 3 mL • kg-1 • h-1 for 1 hour followed by 1 mL • kg-1 • h-1 for 6 hours) plus NAC (1200 mg i.v. followed by 1200 mg bid for the next 48 hours). As control group, a population of STEMI patients treated with conventional hydration with saline solution 0,9% and NAC (1200 mg i.v. followed by 1200 mg bid for the next 48 hours) according to the common clinical practice of the Department of Cardiovascular Medicine of the Policlinico Agostino Gemelli and of Cardiology Department of the Policlinico Casilino will be retrospectively enrolled.