Abstract:Objective To investigate the effect and mechanism of laparoscopic radical resection of rectal carcinoma and the influence on gastrointestinal function of the patients. Methods A total of 110 rectal carcinoma patients in our hospital were selected and divided into a laparoscopic group (76 patients) and a laparotomy group (34 patients) accorded to different surgical methods. The two groups of patients were strictly abide by the principle of total mesorectal excision (TME), the laparoscopic group was given laparoscopic radical resection of rectal carcinoma, the laparotomy group underwent laparotomy. The surgery effect and gastrointestinal function improvement in the two groups were recorded. Results All the patients completed the surgery and there was no conversion to open operation in the laparoscopic group. There was no significant difference in surgical method or operation time between the two groups (P > 0.05), and the amount of bleeding during operation in the laparoscopic group was significantly smaller than that in the laparotomy group (P < 0.05). The postoperative recovery time of bowel sound, exhaust time and defecation time in the laparoscopic group were significantly less than those in the laparotomy group (P < 0.05). In the laparoscopic group, there was no significant difference in the serum motilin or gastrin level at 12 h before operation and 72 h after operation (P > 0.05). There were statistical differences in the serum motilin and gastrin levels between the two groups at 72 h after operation (P < 0.05). On postoperative day 14, the total incidence of incision infection, anastomotic leakage, pulmonary infection, abdominal abscess and anastomotic bleeding in the laparoscopic group was significantly lower than that in the laparotomy group (P < 0.05). Conclusions Laparoscopic radical resection is feasible and safe in the treatment of rectal carcinoma. It can reduce trauma in the patients, promote the recovery of gastrointestinal motility, and is conducive to the maintenance of serum motilin and gastrin balance and reduction of the incidence of complications.