Abstract
PURPOSE: Bowel function after ultralow anterior resection may be improved by a colonic J-pouch. The aim of this study was to compare the bowel function and ambulatory manometry in patients randomly assigned to straight coloanal anastomosis or colonic J-pouch. METHODS: Forty-seven consecutive patients underwent ultralow anterior resection for adenocarcinoma. The colonic J-pouch was constructed with 6-cm limbs. A bowel function questionnaire was administered at one year after surgery. Ambulatory manometry was performed before and at one year after surgery. RESULTS: Values are expressed below as mean and (standard error of the mean). Patients with colonic J-pouch were found to have less frequent stools (4.6 (0.3)vs. 7.1 (0.9) stools/day;P<0.05) and stool clustering (35vs. 63.2 percent;P<0.05) and were less unlikely to soil when passing flatus (85vs. 35.3 percent;P<0.05). The ambulatory anorectal pressure gradient was better preserved in the colonic J-pouch group (30.3 (3.7)vs. 18 (2.6) mmHg;P<0.05). Stool frequency was predicted by the mean rectal pressures (t=3.368;P=0.003). However, higher mean rectal pressures were tolerated by the colonic J-pouch for each daily bowel movement (6.7 (0.6)vs. 4.4 (0.5) mmHg/stool;P=0.008). Anal sampling episodes and slow wave activity were impaired postoperatively in both groups. The minimal anal pressures were lower in patients unable pass flatus without soiling (12.4 (5.3)vs. 26 (2.3) mmHg;P=0.004). Large contraction waves were not seen, and this may be related to the absence of severe defecation problems with 6-cm colonic J-pouches. CONCLUSIONS: A colonic J-pouch resulted in better bowel function and more favorable ambulatory manometric findings at one year of follow-up.
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Ho, YH., Tan, M., Leong, A.F.P.K. et al. Ambulatory manometry in patients with colonic J-pouch and straight coloanal anastomoses. Dis Colon Rectum 43, 793–799 (2000). https://doi.org/10.1007/BF02238016
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DOI: https://doi.org/10.1007/BF02238016