Nosocomial Pneumonia After Coronary Artery Bypass Grafting

Inclusion Criteria: * Age 18 years and older. * Myocardial revascularization for CAD via CABG during the current hospitalization, in accordance with the indications defined by the ESC/EACTS Guidelines on Myocardial Revascularization \[DOI: 10.1093/eurheartj/ehy394\]. * Successful transfer from the intensive care unit to a general ward after surgery. * One or more of the risk factor for nosocomial pneumonia \[doi: 10.15829/1560-4071-2024-6094\]. * Signed informed consent for participation in the study. Pre-operative Exclusion Criteria: * Acute coronary syndrome within the last 1 month. * Combined surgical intervention for infective endocarditis. * Combined valve surgery. * Concomitant pulmonary disease requiring respiratory support prior to surgery. * Presence of a tracheostomy. * Participation in another clinical trial at the time of potential inclusion or within the preceding 3 months. * Diagnosis of malignant neoplasms within the last 5 years. * Life duration of less than 1 year. * HIV infection. Peri-operative Exclusion Criteria: * Ventilator-Associated Pneumonia (VAP). * Acute Myocardial Infarction after CABG and before inclusion. * Acute Stroke after CABG and before inclusion. * Pulmonary after CABG and before inclusion. * Pulmonary Edema after CABG and before inclusion. * Acute Respiratory Distress Syndrome (ARDS) after CABG and before inclusion. * Pneumothorax requiring drainage after CABG and before inclusion. * Delirium after CABG and before inclusion. * Chronic Kidney Disease (CKD) Stage 4-5 / Acute Kidney Injury requiring renal replacement therapy or chronic dialysis. * Any perioperative complication requiring the patient's return to the intensive care unit or prolonging the ICU stay beyond 48 hours. * Any other active infectious process at a different site. * Novel Coronavirus Infection (COVID-19).