Eight hours ago, an infant with hirschsprung's disease had surgery to create a colostomy. which finding should alert the nurse to notify the health care provider (hcp) immediately?

The nurse observed the following symptoms of hirschsprungs disease in the infant, an increase abdominal circumference (about three centimetres), tendancy of fussiness in the infant, the absence of bowel sound. In addition there was appearance of bright red stoma.