A temporary arrest of intestinal peristalsis. Etiology Ileus is most often associated with intraperitoneal or retroperitoneal infection. Gastric and colonic motility disturbances after abdominal surgery are largely a result of abdominal manipulation. The small bowel is largely unaffected, and motility and absorption are normal within a few hours after operation. Stomach emptying is usually impaired for about 24 h, but the colon may remain inert for 48 to 72 h.
Activity tends to return to the cecum before it returns to the sigmoid.
Symptoms, Signs, and Diagnosis Symptoms and signs include abdominal distention, vomiting, obstipation, and cramps. Auscultation reveals a silent abdomen or minimal peristalsis. X-rays show gaseous distention of isolated segments of both small and large bowel. At times, the major distention is in the colon. Treatment Treatment usually involves continuous nasogastric suction, nothing by mouth, IV fluids and electrolytes, and a minimal amount of sedatives.