Prognostic Nutritional Index for Predicting Outcomes Following Coronary Artery Bypass Grafting (CABG) Surgery

The Merits of the Prognostic Nutritional Index for Prediction of the Outcome of Coronary Artery Bypass Grafting Surgery: A Retrospective Observational Study

Coronary artery bypass grafting (CABG) is a major cardiac surgery associated with risks of serious perioperative complications and mortality. Malnutrition and inflammation are known independent risk factors for poor outcomes in patients with coronary artery disease. This retrospective observational study evaluates the Prognostic Nutritional Index (PNI)-a simple score derived from serum albumin and lymphocyte counts-as an objective measure of nutritional and inflammatory status. The research aims to determine how well preoperative PNI and its postoperative changes can predict complications such as acute kidney injury, myocardial infarction, and sternal wound infections in patients undergoing CABG.

Inclusion Criteria:

• Patients who underwent CABG surgery.
• Availability of a signed informed consent form before surgery.

Exclusion Criteria:

• Other concurrent cardiac surgeries.
• Presence of malignancy or systemic inflammatory disorders.
• Active infection or autoimmune disorders.
• Maintenance on immunosuppressants.
• Liver disease.
• Files with missing data.