Small bowel obstruction (SBO) often occurs after total proctocolectomy and ileal pouch anal anastomosis with diverting loop-ileostomy for ulcerative colitis. Little is known about the association between SBO and surgical procedures for diverting loop-ileostomy. We conducted a multicenter, retrospective questionnaire survey. Unlinkable anonymized data on ileostomy procedures and ileostomy-related complications including SBO were collected from institutions specializing in surgery for inflammatory bowel disease. In total, 515 patients undergoing total proctocolectomy and ileal pouch anal anastomosis with loop-ileostomy among 1022 patients with ulcerative colitis undergoing surgery during a 3-year period between 2012 and 2014 were analyzed. Twenty-nine patients without information on complications were excluded. Incidence of ileostomy-related complications and factors associated with the development of small bowel obstruction were determined in 486 patients. The most common complications were parastomal dermatitis (n=169, 34.8%), SBO (n=111, 22.8%), mucocutaneous dehiscence (n=59, 12.1%), stoma prolapse (n=21, 4.3%), parastomal hernia (n=12, 2.5%), and stoma retraction (n=11, 2.3%). Incidence of small bowel obstruction was significantly higher in patients with distance from the ileal pouch to the ileostomy of less than 30 cm and in patients undergoing laparoscopic surgery. Procedures for diverting loop-ileostomy after surgery for ulcerative colitis varied among institutions. Incidence of small bowel obstruction was high after total proctocolectomy and ileal pouch anal anastomosis with diverting loop-ileostomy. Shorter distance between the pouch and the stoma and the laparoscopic surgery were risk factors for SBO in univariate analysis.
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