The DKT group had significantly faster time until first flatus ( 67.5 + / - 13.6 h vs. 77.9 + / - 11.8 h , P < 0.01 ) and bowel movement ( 82.9 + / - 17.8 h vs. 99.5 + / - 18.9 h , P < 0.01 ) and colonic transit time ( 91.9 + / - 19.8 h vs. 115.2 + / - 12.8 h , P < 0.05 ) .