Impact of defunctioning loop ileostomy on outcome after restorative proctocolectomy for ulcerative colitis

This study analyzes the impact of a temporary loop ileostomy on postoperative outcome after restorative proctocolectomy for ulcerative colitis in terms of complications and reoperations including ileostomy closure. The records of 122 consecutive patients undergoing restorative proctocolectomy for ulcerative colitis during a 12-year period were reviewed. In 89 patients, a defunctioning ileostomy was created, while 33 patients had no ileostomy. Statistics were done with Chi-square test and Mann-Whitney U test, p < 0.05 considered significant. Both study groups were comparable concerning age, colitis activity, previous diseases, previous surgery, use of steroids, and immunosuppressives. Pouch-related septic complications (anastomotic dehiscence, pouch leakage, pelvic abscess) were significantly lower in the ileostomy group (5.6% vs. 18.2%, p = 0.031), resulting in a lower rate of emergency laparotomies following restorative proctocolectomy (4.5% vs. 30.3%, p < 0.001). Including all complications associated with scheduled closure of ileostomy, the cumulative frequency of emergency laparotomies was significantly lower in the ileostomy group (13.5% vs. 30.3%, p = 0.032). The cumulative duration of hospitalization, including all hospital stays for complications or closure of the ileostomy, was significantly longer in the ileostomy group [median 22 days (11-92) vs. 14 days (9-109), p < 0.001]. During long-term follow-up, a stricture at the pouch-anal anastomosis was more common in the ileostomy group (24.7% vs. 6.1%, p = 0.021), whereas only one stricture necessitated surgical therapy. Creation of a defunctioning loop ileostomy reduces pouch-related septic complications and the frequency of emergency second laparotomies after restorative proctocolectomy for ulcerative colitis.