ERAS Compliance and Nutritional Outcomes After Lung Cancer Surgery

Prospective Evaluation of the Effect of Compliance With the Enhanced Recovery After Surgery Protocol on Postoperative Nutritional Risk and Prognostic Nutritional Index in Patients Undergoing Lung Cancer Surgery

This prospective observational study will evaluate the association between ERAS protocol compliance and postoperative nutritional outcomes in 120 patients undergoing lung cancer surgery. ERAS compliance will be recorded, and patients will be classified as having high, moderate, or low compliance. NRS-2002 and PNI will be assessed before surgery and at postoperative 48 hours. Hospital stay and postoperative complications will also be evaluated.

This single-center observational cohort study will include 120 patients aged 18-85 years undergoing elective lung cancer surgery. No intervention will be assigned. ERAS compliance will be categorized as high (≥80%), moderate (60-79%), or low (<60%). Changes in NRS-2002 and PNI, hospital stay, and postoperative complications will be evaluated using routine clinical data.

Inclusion Criteria:

• Age between 18 and 85 years
• Scheduled for elective lung cancer surgery under general anesthesia
• ASA physical status I-III
• Able to provide written informed consent

Exclusion Criteria:

• Emergency surgery
• Preoperative total parenteral nutrition
• Advanced organ failure
• Uncontrolled metabolic disease
• Pregnancy or breastfeeding
• Inability to provide informed consent