Systemic Inflammatory Cytokines Predict the Infectious Complications but Not Prolonged Postoperative Ileus after...

Area of Science:

• Gastroenterology
• Surgical Oncology
• Immunology

Background:

• Postoperative ileus (POI) is a frequent complication following colorectal surgery.
• Inflammation plays a key role in the pathophysiology of POI and other postoperative complications.
• Early detection of prolonged POI (PPOI) and infectious complications is crucial for patient management.

Purpose of the Study:

• To investigate the potential of inflammatory biomarkers for early detection of PPOI.
• To assess the utility of these biomarkers in identifying infectious complications post-colorectal surgery.
• To compare the diagnostic value of interleukin-6 (IL-6) and C-reactive protein (CRP) in predicting these outcomes.

Main Methods:

• A cohort of 47 adult patients undergoing oncological colorectal surgery was studied.
• Perioperative gastrointestinal symptoms were recorded using patient diaries.
• Blood samples were analyzed for leucocytes, CRP, IL-6, TNF-α, and IL-1β preoperatively and on postoperative days 1 and 3.

Main Results:

• Patients with PPOI experienced significantly longer hospital stays.
• Elevated postoperative IL-6 and CRP levels were associated with infectious complications (p < 0.05).
• IL-6 demonstrated superior diagnostic accuracy compared to CRP for predicting infectious complications on postoperative days 1 and 3 (ROC analysis).

Conclusions:

• Inflammatory cytokine levels, including IL-6, do not reliably predict PPOI after colorectal surgery.
• Postoperative changes in IL-6 levels can predict infectious complications with higher accuracy than current leukocyte or CRP tests.
• IL-6 emerges as a potential biomarker for early identification of infectious complications in the postoperative setting.