Reconstructive heart surgeries, like coronary artery bypass grafting (CABG), carry a risk of significant complications, including death.  These complications encompass a range of cardiovascular issues, including CABG-related myocardial infarction, worsening heart failure, arrhythmias, stroke, and pericarditis.  This study aimed to develop a method for predicting these early postoperative complications in patients with ischemic heart disease undergoing CABG.  The prediction model was based on the relationship between hemolysis (blood breakdown during surgery), changes in iron levels, markers of oxidative stress, and nitric oxide levels.