While intraoperative parameters such as the entry time ( @ @ vs @ @ seconds ) and blood loss value ( @ @ vs @ @ mL ) were significantly reduced in the DOE group in comparison with those of OHT group ( respectively , P < @ and < @ ) , there were also trends to slight decrease of the occurrence of the minor injuries , manifested as omental small vessels rupture ( @ of @ vs @ of @ ) and punctures and pinches of jejunal serosa ( @ of @ vs @ of @ ) in patients of the DOE group in comparison with those of OHT group ( respectively , P = @ and = @ ) .