The patients in the group 2 had a significantly shorter interval between surgery and passage of first flatus than in group 1 (1.8 ± 0.5 days vs 2.6 ± 0.7 days (p = 0.042)), had a significantly shorter postoperative hospital stay than in group 1 (4.5 ± 0.6 days vs 5.8 ± 0.8 days (p = 0.026)).