Sacral nerve function in child patients after ileal J-pouch-anal anastomosis for ulcerative colitis

Area of Science:

• Neurology
• Pediatric Surgery
• Gastroenterology

Background:

• Ulcerative colitis (UC) management in children often involves ileal J-pouch-anal anastomosis (IPAA).
• Post-IPAA soiling is a common complication in pediatric patients, impacting quality of life.
• The puborectalis muscle (PM) plays a crucial role in fecal continence.

Purpose of the Study:

• To investigate the neurological function of the puborectalis muscle (PM) in pediatric patients experiencing soiling after IPAA for UC.
• To assess sacral nerve terminal motor latency (SNTML) as an indicator of PM innervation.
• To determine if SNTML abnormalities correlate with soiling and if they resolve over time.

Main Methods:

• Sacral nerve terminal motor latency (SNTML) tests were performed on pediatric patients (11-13 years) at 6 months and 2 years post-IPAA.
• Patients were categorized into groups based on soiling status: Group A (soiling at 6 months) and Group B (continence at 2 years).
• Group C comprised healthy controls (12-17 years) for comparison.

Main Results:

• Patients experiencing soiling at 6 months post-IPAA (Group A) showed significantly prolonged SNTML in both right and left sacral nerves compared to continent patients (Group B) and controls (Group C).
• No significant difference in SNTML was observed between continent patients (Group B) and controls (Group C).
• SNTML values improved significantly by the 2-year follow-up in patients who initially experienced soiling.

Conclusions:

• Temporary damage to bilateral sacral nerves during IPAA surgery may cause soiling in pediatric UC patients.
• The observed SNTML prolongation is associated with soiling, suggesting a neurological basis for the complication.
• Sacral nerve function, as indicated by SNTML, demonstrates recovery within two years after IPAA, correlating with improved continence.