[Modeling of rectal ampulla and rectosigmoid sphincter mechanism in anterior resections of various level].

Original technologies of modeling of rectal ampulla and rectosigmoid sphincter mechanism have been developed for improvement of short- and long-term results after anterior resection of the rectum. The study group consisted of patients after upper resection (n=54) where rectosigmoid mechanism was formed as valve flap on 4-5 cm distally to anastomosis with recovery of pelvic peritoneum at this level, and of the patients after lower resection (n=47) where modeling of rectal ampulla and rectosigmoid mechanism was performed with serosomyotomy of intestinal portion between sphincter and anastomosis. The control group consisted of patients with direct anastomoses at the distance of 6-12 cm (n=12) and 5-1 cm from the anus. 4-6 months later the ampulla-shaped dilatation of intestinal portion after serosomyotomy and formation of functionally active sphincter mechanism were detected in patients of the study group. Developed technologies reduced the number of patients with multi-moment evacuation and incapable to hold the stool for 15 min.