What are some common GI changes following surgery?

1)Abdominal distention(Due to anesthesia, surgical manipulation, narcotics and carbon dioxide in the abdominal cavity) 2)Peristalsis is slowed 3)Absent bowel sounds(Each quadrant must be assessed for 3-5 mins to determine absence) 4)Paralytic ileus(This is a medical emergency) 5)Singulitis(Due to irritation of the phrenic nerve)