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Does a Defunctioning Stoma Impair Anorectal Function After Low Anterior Resection of the Rectum for Cancer?: A 12-Year Follow-up of a Randomized Multicenter Trial
Colorectal Unit, Department of Surgery, Örebro University Hospital, Örebro, Sweden.
Colorectal Unit, Department of Surgery, Örebro University Hospital, Örebro, Sweden.
Colorectal Unit, Department of Surgery, Örebro University Hospital, Örebro, Sweden.
Colorectal Unit, Department of Surgery, Örebro University Hospital, Örebro, Sweden; Faculty of Medicine and Health, School of Health and Medical Sciences, Department of Surgery, Örebro University, Örebro, Sweden.
2017 (English)In: Diseases of the Colon & Rectum, ISSN 0012-3706, E-ISSN 1530-0358, Vol. 60, no 8, p. 800-806Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: Anorectal function after low anterior resection of the rectum for cancer is often impaired, and long-term outcome has not frequently been reported.

OBJECTIVE: We evaluated anorectal function 12 years after rectal resection with regard to whether patients had a defunctioning temporary stoma at the initial rectal resection.

DESIGN: An exploratory cross-sectional investigation of a previously randomized study population.

SETTINGS: Twenty-one Swedish hospitals performing rectal cancer surgery during a 5-year period participated in the trial.

PATIENTS: Patients operated on with low anterior resection for cancer were included.

INTERVENTIONS: Patients were randomly assigned to receive or not receive a temporary defunctioning stoma.

MAIN OUTCOME MEASURES: We evaluated anorectal function 12 years after low anterior resection in patients who were initially randomly assigned to temporary stoma or not, by means of using the low anterior resection syndrome score questionnaire, which assesses incontinence for flatus, incontinence for liquid stools, defecation frequency, clustering, and urgency. Self-perceived health status was evaluated by the EQ-5D-3L questionnaire.

RESULTS: Eighty-nine percent (87/ 98) of the patients responded to the questionnaires, including 46 with and 41 without an initial temporary stoma. Patient demography was comparable between the groups. No differences regarding major, minor, and no low anterior resection syndrome categories were found between the groups. The stoma group had increased incontinence for flatus (p = 0.03) and liquid stools (p = 0.005) and worse overall low anterior resection syndrome score (p = 0.04) but no differences regarding frequency, clustering, and urgency.

LIMITATIONS: The study was limited by its sample size (n = 98) based on a previously randomized trial population (n = 234).

CONCLUSIONS: After low anterior resection for cancer, the incidence of the categories major, minor, and no low anterior resection syndrome were comparable in the stoma and the no-stoma groups. Incontinence for flatus and liquid stools was more commonly reported by patients who were randomly assigned to temporary stoma, as compared with those without, which may indicate an association between temporary stoma and impaired anorectal function.

Place, publisher, year, edition, pages
Lippincott Williams & Wilkins, 2017. Vol. 60, no 8, p. 800-806
Keywords [en]
Anorectal function, Defunctioning stoma, Low anterior resection, Low anterior resection syndrome score, Rectal cancer
National Category
Gastroenterology and Hepatology Surgery
Identifiers
URN: urn:nbn:se:oru:diva-59306DOI: 10.1097/DCR.0000000000000818ISI: 000405418100010PubMedID: 28682965Scopus ID: 2-s2.0-85024847647OAI: oai:DiVA.org:oru-59306DiVA, id: diva2:1136164
Available from: 2017-08-25 Created: 2017-08-25 Last updated: 2020-02-04Bibliographically approved
In thesis
1. Long term aspects of defunctioning stoma following low anterior resection for rectal cancer
Open this publication in new window or tab >>Long term aspects of defunctioning stoma following low anterior resection for rectal cancer
2020 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

In Sweden, more than 2 000 individuals are diagnosed with rectal cancer each year. Surgery is the main curative treatment, and involves removal of the tumor with the surrounding mesorectum in adefined anatomical plane. Intestinal continuity is restored by anastomosing the colon to the rectalstump at the pelvic floor. Leakage of the anastomosis is a potentially life-threatening complication, and is most common in low anastomoses located at the pelvic floor. A temporary defunctioning loop stoma (DS) reduces both the rate of leakage and the severity when leakage occurs despite DS. The use of DS has increased substantially in Sweden over the last 15 years, especially in low anastomoses at the level of the pelvic floor. The purpose of this thesis was to increase the understanding of different aspects of DS and its impact on anorectal function, long-term survival, cancer recurrence, timing of stoma reversal, and the risk of having a permanent stoma.

In Paper I, the LARS score questionnaire was used to assess anorectal function among patients who had participated in a Swedish nationwide randomized trial. Those who had a DS (n=116) were compared to those without DS (n=118). After a median follow-up time of 12 years, patients with DS had a poorer bowel function than those without DS in terms of incontinence for gas and loose stools. No differences were found with regard to fecal incontinence, defragmentation, and urgency. Women and patients who had received preoperative radiotherapy had poorer anorectal function. Impaired anorectal function was associated with lower self-perceived health.

In Paper II, a cohort of 110 patients from Örebro Region, Sweden, was investigated with regard to whether or not the DS was reversed within a 4-month period. Only 25% had their stoma reversed within this timeframe. Moreover, a third of the patients had a delayed stoma closure without any identifiable medical reason. This was an improvement compared to a previous study from the same region, which found that 58% of patients operated between 1995 and 2007 had a delayed stoma reversal without any identifiable medical reason. The most common cause for delayed DS reversal in our study was adjuvant chemotherapy (38%).

In Paper III, the impact of DS on long-term survival and local and distant cancer recurrence was investigated in a nationwide population-based study cohort operated with low anterior resection (LAR) between 1995 and 2010 (n=4130), retrieved from the Swedish Colorectal Cancer Registry. Patients with a DS at LAR (n=2163) had an increased survival rate during the first 3 years afterindex surgery in comparison with those without a DS. Beyond 3 years of follow-up, no difference was noted between the two groups. There were no differences regarding either local cancer recurrence or distant metastases between patients with and without DS.

In Paper IV, the risk of having a permanent stoma beyond 5 years after rectal cancer surgery was evaluated in 232 patients (excluding mortality within 90 days; n=2) previously randomized to DS or no DS. After a median follow-up of 15 years, 25% (57/232) had a permanent stoma. Of these, 23% (13/57) had their permanent stoma constructed at median 10 years after the index surgery. The incidence of permanent stoma was numerically lower in the group originally randomized to DS, but this difference was not statistically significant. Anastomotic leakage was the most common riskfactor for ending up with a permanent stoma.

Place, publisher, year, edition, pages
Örebro: Örebro University, 2020. p. 71
Series
Örebro Studies in Medicine, ISSN 1652-4063 ; 206
National Category
Surgery
Identifiers
urn:nbn:se:oru:diva-78812 (URN)978-91-7529-319-6 (ISBN)
Public defence
2020-03-06, Örebro universitet, Campus USÖ, hörsal C3, Södra Grev Rosengatan 32, Örebro, 09:00 (English)
Opponent
Supervisors
Available from: 2019-12-19 Created: 2019-12-19 Last updated: 2020-03-11Bibliographically approved

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