Fig. 3. Self-reported abdominal comfort scores at 2 and 6 h after surgery, at 9 am, 1 pm, and 5 pm on the first day after surgery, and at 9 am and 1 pm on the second day after surgery. Abdominal discomfort was reported on a 100-mm visual analog scale (VAS), with 0 mm being no discomfort and 100 mm being the worst imaginable discomfort. *  P < 0.05 as compared with saline.