This is a randomized , @:@ , double-blind , placebo-controlled clinical trial.The study takes place at two centers in Chile : University of Chile Clinical Hospital and San Borja Arriarn Clinical Hospital.The subjects will be @ adults with acute myocardial infarction with indication for percutaneous coronary angioplasty.This intervention is being performed as a pilot study , involving high-dose vitamin C infusion plus oral administration of vitamin E ( Vitamin-treatment group ) or placebo ( Control group ) during the angioplasty procedure .