The investigators intend to evaluate Oxidative Stress biomarkers through a. Catalase Activity Assay; b. Lipid Peroxidation Assay; c. SOD Assay; d. Total Antioxidant Capacity Assay; e. Glutathione Peroxidase at patients with acute myocardial infarction STEMI referred for primary PCI; The investigators also aim to evaluate cardiac necrosis by measuring Heart Fatty Acid Binding Protein (H-FABP), TnI, CK, CK-MB, LDH and AST in these patients with acute myocardial infarction referred for primary PCI; Also, the investigators intend to evaluate body composition through bioimpedance spectroscopy (BCM - Fresenius Care) at the moment of admission.

The investigators aim to fully characterise these patients through oxidative millieu, hFABP and make correlations with LVEF dysfunction.

Gathered data:

• Descriptive general demographic data;
• Previous pathologies (ischemic heart disease, peripheral arterial disease, stroke, heart failure, previous percutaneous coronary interventions, coronary artery bypass grafting - CABG, known renal disease);
• Cardiovascular risk factors (age, weight, height, abdominal perimeter, body mass index, smoking, sedentariness, diabetes, hypertension, dyslipidaemia);
• Oxidative Stress biomarkers: Catalase Activity Assay; Lipid Peroxidation Assay; SOD Assay; Total Antioxidant Capacity Assay; Glutathione ;
• Cardiac necrosis markers: Heart Fatty Acid Binding Protein (H-FABP), TnI, CK, CK-MB, LDH and OGT;
• Routine biological data;
• Metabolic data (obtained from two body composition monitoring evaluations - before and 12 hours after coronary intervention) - body water, body fat tissue;
• Information regarding primary PCI (less than 12 hours of ischemic symptoms);
• Coronarographic details, type of used stent, periprocedural specific complications, final TIMI - thrombolysis in myocardial infarction - flow);
• Echocardiography at admission (LVEF);
• Measurement of arterial stiffness through Sphigmocore pulsed-wave-velocity (24 hrs post-procedural, 2 velocities: carotid - femoral and carotid - radial);
• Calculating of cardiovascular risk scores: Syntax Score, Framingham score, ASSIGN score, QRISK2 score, PROCAM score, CRUSADE score, GRACE score, CHADS VASc score, MESA score, ASCVD score, Hamilton Depression Rating Scale (HAM-D), Hamilton Rating Scale for Anxiety;
• In-hospital and one month follow-up MACE.

Inclusion Criteria:

• Adults with ST elevation Myocardial Infarction (<12h) diagnostic confirmed;
• Included in the Romanian National Programme of Primary Percutaneous Revascularisation (for who the Guidelines recommend primary PCI);

Exclusion Criteria:

• Patients who do not sign informed consent for primary PCI

There is not a plan to make IPD available.