• Andrew Emmanuel, Ezzat Chohda, Christo Lapa, Andrew Miles, Amyn Haji, and Joe Ellul.
• Department of Colorectal Surgery, King's College Hospital NHS Foundation Trust, London, UK. aemmanuel@nhs.net.
• World J Surg. 2018 Nov 1; 42 (11): 3755-3764.

BackgroundStudies suggest that defunctioning stomas reduce the rate of anastomotic leakage and urgent reoperations after anterior resection. Although the magnitude of benefit appears to be limited, there has been a trend in recent years towards routinely creating defunctioning stomas. However, little is known about post-operative complication rates in patients with and without a defunctioning stoma. We compared overall short-term post-operative complications after low anterior resection in patients managed with a defunctioning stoma to those managed without a stoma.MethodsA retrospective cohort study of patients undergoing elective low anterior resection of the rectum for rectal cancer. The primary outcome was overall 90-day post-operative complications.ResultsTwo hundred and three patients met the inclusion criteria for low anterior resection. One hundred and forty (69%) had a primary defunctioning stoma created. 45% received neoadjuvant radiotherapy. Patients with a defunctioning stoma had significantly more complications (57.1 vs 34.9%, p = 0.003), were more likely to suffer multiple complications (17.9 vs 3.2%, p < 0.004) and had longer hospital stays (13.0 vs 6.9 days, p = 0.005) than those without a stoma. 19% experienced a stoma-related complication, 56% still had a stoma 1 year after their surgery, and 26% were left with a stoma at their last follow-up. Anastomotic leak rates were similar but there was a significantly higher reoperation rate among patients managed without a defunctioning stoma.ConclusionPatients selected to have a defunctioning stoma had an absolute increase of 22% in overall post-operative complications compared to those managed without a stoma. These findings support the more selective use of defunctioning stomas.Study RegistrationRegistered at www.researchregistry.com (UIN: researchregistry3412).

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