[Sutureless anastomoses in the rat, rabbit and pig]

Healing of intestinal anastomoses was found to be effective in rat, rabbit and pig even after temporary approximation by sutures for one hour. Approximation of bowel segments was achieved by interrupted inverting sutures. After one hour a fibrinous connection of inverted serosa segments was to be observed. Bursting pressure was determined on the 1st, 3rd and 7th postoperative day. There was no significant difference between sutureless and regular anastomoses. Determination of breaking strength of approximated anastomoses one hour and twenty-four hours after removal of sutures was found to be 0.19 N and 0.8 N, respectively. Extent of adhesions was similar in conventional and sutureless anastomoses. Histologic analyses revealed areas of necrosis in sutured anastomoses, whereas in sutureless anastomoses no necrosis could be detected.