[Effect of the surgical procedure on disorders of wound healing in abdomino-perineal rectum excision].

We found the infection rate to be significantly lower performing metachronous procedures although surgery lasted significantly longer than synchronous extirpation. From our results and other data from literature we conclude that occlusion of the natural anus in case of treatment with synchronous procedure leads to high intraluminal pressures during mobilisation of the rectum from sacral cavity. This enables germs to pass through the intact intestinal wall and results in contamination of the wound cavity.