Is mesenteric defect closure needed in urologic surgery using ileum?

Area of Science:

• Surgical oncology
• Urology
• Gastroenterology

Background:

• Surgical dogma traditionally recommends mesenteric defect (MD) closure after bowel anastomosis.
• The necessity of MD closure following ileum harvest for genitourinary reconstructive surgery (GURS) remains debated.
• Potential complications include gastrointestinal adverse events (GIAE) such as ileus and small bowel obstruction (SBO).

Purpose of the Study:

• To evaluate the necessity of mesenteric defect closure after ileum harvest for GURS.
• To analyze the incidence of early and late GIAE in patients with and without MD closure.
• To identify risk factors for GIAE in this patient population.

Main Methods:

• Retrospective review of patients undergoing urologic reconstruction with ileum.
• Analysis of GIAE incidence (ileus, SBO, GI fistula, stoma complications).
• Multivariate analysis of patient and procedure variables, including body mass index (BMI).

Main Results:

• 288 patients included; 67% had MD closure.
• No significant difference in early GIAE rates between closure (16.5%) and non-closure (21.3%) groups (p=0.22).
• No significant difference in late GIAE rates between closure (5.7%) and non-closure (6.4%) groups (p=0.56).
• Increasing BMI was associated with increased GIAE risk.
• No SBOs were attributed to internal herniation.

Conclusions:

• Mesenteric defect (MD) can be safely left open after ileum harvest for urologic reconstruction.
• Non-closure of the MD is not associated with an increased incidence of early or late gastrointestinal adverse events (GIAE).
• Further research may explore the role of BMI in GIAE risk stratification.