Outcomes of Open Side to End Antegrade Colorectal Single Stapler Anastomosis Versus Open End to End Retrograde Trans-anal Colorectal Single Stapler Anastomosis in Non-emergent Sigmoid and Rectal Cancers. Randomized Controlled Clinical Trial

Abstract

\n Introduction: Cancer rectum and sigmoid is increasing nowadays. Resection is done by open and laparoscopic approaches. Laparoscopic approach is not available in many sites worldwide. Aim of this study: To analyze the outcomes of open side to end (antegrade) colorectal single stapling anastomosis versus open end to end (retrograde) Trans-anal colorectal stapling anastomosis in non-emergent sigmoid and rectal cancers open surgery in adults.Patients and Methods: Randomized controlled trial was performed on patients with sigmoid and rectal cancers between September 2016 and September 2018. Results: The majority of studied group were between 50-70 years with mean of 62.58±12.3 years and 61.03±13.98 years in group A and group B respectively. Intraoperative data showed no significant difference was founded between studied group except at operative time and mean anastomotic time as group A was significantly shorter. Univariate analysis showed that perioperative blood loss, length of stay, reoperation, inpatient death, infection and bleeding were significantly associated with leakage. Multivariate analysis of anastomotic leak showed that infection is the only independent predictors for anastomotic leak. There is statistically significant change as regard range of bowel frequency in end to end group only (p=0.04) and there is statistically significant difference as regard incontinence for Flatus in side to end group only (p=0.00) .There is statistically significant change in both group regard Incontinence for liquid stools(p=0.00) and Clustering of stool(p=0.00 and p=0.043).The quality of life in Antegrade group significantly drop at 6 months and return to baseline after that as regard PWB, FWB and CCS with no difference as regard SWB & EWB while in retrograde group, the same change happened only as regard PWB & FWB but SWB and CCS percentage didn’t return to baselineConclusion: The side-to-end anastomoses approach is a safe approach of anastomosis and may be used as alternative to retrograde approach.