The study will include patients consecutively admitted with acute myocardial infarction at State University of Campinas Hospital. Participants will be evaluated during hospitalization and, after they fulfill the inclusion criteria and sign an informed consent, it will be collected a brief medical history and recorded results from glycated hemoglobin (HbA1c), glycaemia, total cholesterol (TC), triglycerides (TG), HDL cholesterol (HDL-C), C-reactive protein (CRP), urea (U), creatinine (Cr), markers of myocardial necrosis (troponin T and CK-MB), Hemoglobin, Red blood cell, Leucocytes, Na, K, Ca and Mg.