Main complication of different diseases is the paralytic ileus. The basis of all pathophysiological mechanisms is a decrease of the immune deficiency in the intestinal wall. At first the intestinal water-, electrolyte- and protein metabolism is disturbed. Secondly we can measure an endotoxinemia and a bacteriemia with all complications. In the end a complete septic shock and an insufficiency of the organ "gut" can be observed. The patients die - in absence of treatment - because of intraabdominal sepsis and peritonitis.