The preoperative medical management depends on the age and clinical condition of the infant. The status of nutrition, hydration, electrolyte, and acid-base balance must be optimal. Stabilizing management in the newborn includes NPO, fluid resuscitation, antibiotics, and nasogastric decompression. Older infants often do not present with obstruction, and therefore gastric decompression and IV fluids may not be required until closer to surgery. The newborn bowel is sterile; therefore, no additional bowel preparation is required. In the healthy older infant, thorough preoperative bowel preparation is crucial to decrease potential postoperative complications. Orders include several days of clear liquid diet, GoLytely (Braintree Laboratories, Inc., Braintree, MA) by mouth or nasogastric tube, rectal irrigations, and systemic antibiotics. The infant will be NPO after midnight and receive maintenance intravenous fluids.