Serum Total Cholesterol Levels Would Predict Nosocomial Infections After Gastrointestinal Surgery

Area of Science:

• Surgical Outcomes Research
• Clinical Chemistry
• Epidemiology

Background:

• Total cholesterol levels and statin use have been anecdotally linked to gastrointestinal surgery complications.
• Understanding preoperative factors influencing surgical outcomes is crucial for patient management.

Purpose of the Study:

• To investigate the association between preoperative total cholesterol levels and the risk of postoperative infections and mortality.
• To evaluate the role of statin medication in relation to postoperative complications.

Main Methods:

• Retrospective review of 2211 patients undergoing general surgery across two hospitals.
• Analysis using multiple logistic regression models to identify predictors of postoperative nosocomial infections.
• Assessment of serum total cholesterol concentrations and statin use as potential risk factors.

Main Results:

• Serum total cholesterol <160 mg/dl correlated with higher rates of superficial and deep incisional surgical site infections.
• A reverse J-shaped relationship was observed between total cholesterol and organ space surgical site infections/pneumonia.
• No significant impact of cholesterol levels on postoperative mortality was found. Decreased serum albumin was a strong infection predictor.
• Postoperative pneumonia was absent in statin users with cholesterol <200 mg/dl.

Conclusions:

• Preoperative total cholesterol levels may serve as a predictive marker for surgical outcomes, particularly infections.
• Low cholesterol is associated with increased surgical site infection risk.
• Preoperative statin use might mitigate the risk of postoperative pneumonia in specific cholesterol ranges (<200 mg/dl).