Abstract: Objectivem To explore the protective effect of laparoscopic radical resection of rectal cancer on urinary function based on membrane anatomy. Methods Ninety-two patients with rectal carcinoma underwent surgical treatment in our hospital from August 2019 to August 2021 were enrolled,and divided into two groups according to random number table methods,each with 46 cases.The reference group received laparoscopic radical resection of rectal cancer,and the study group received laparoscopic radical resection of rectal cancer under membrane anatomy.The operation related indexes,urination function indexes,incidence of urination dysfunction,postoperative complications and 1year prognosis were compared between two groups. Results Compared with reference group,study group had significantly less intraoperative bleeding,shorter postoperative anal exhaust time and significantly longer operative time,with statistical difference (P<0.05).Compared with reference group,the catheter removal time and residual urine volume of study group were significantly reduced (P<0.05),the maximum urine flow rate was significantly increased (P<0.05),and no statistical significance was found in urine volume between two groups (P>0.05).The incidence rate of urination dysfunction was 10.87% in study group,which was notably lower than 30.43% in reference group,with statistical difference (P<0.05).The incidence rate of postoperative complications demonstrated no statistical difference between two groups (P>0.05).One year after surgery,the distant metastasis rate (2.17% vs 4.35%),recurrence rate (4.35% vs 6.52%) and mortality rate (2.17% vs 2.17%) yielded no statistical difference between two groups (P>0.05). Conclusion Application of laparoscopic radical resection of rectal carcinoma based on membrane anatomy has a certain protective effect on the urinary function of patients and can effectively reduce the incidence of postoperative urinary dysfunction.

Key words: membrane anatomy, laparoscope, radical resection of rectal cancer, urinary function, postoperative complications