Objective To investigate the effect of Da Vinci robot-assisted laparoscopy on urination function and comfort in patients undergoing preresection for rectal cancer.

Methods Forty-eight patients who underwent Da Vinci robot-assisted laparoscopic preresection for rectal cancer were selected as the study objects and included in the robot group.Another 51 patients who underwent laparoscopy alone during the same period were included in the laparoscopic group.The time of catheter removal, the success rate of urination, the incidence of complications related to catheter indwelling (frequency of urination, urgency of urination, pain of urination and retention of urine), the maximum urine flow rate and residual urine volume of bladder, urination function, positive rate of urine culture, sleep duration and patient comfort were compared between the two groups.

Results The removal time of indentation catheter in the robot group was significantly earlier, and the residual urinary volume of bladder was significantly less than that in the laparoscopic group (P < 0.05).The rate of successful urination and maximum urinary flow rate in the robot group was significantly higher, and the rate of complications (frequency of urination, urgency of urination, urinalgia and urinary retention) and maximum urinary flow rate were significantly lower than those in the laparoscopic group (P < 0.05). There was no significant difference in the positive rate of urine culture between the two groups (P> 0.05).The urinary function of the robot group was significantly better, and the rate of urinary dysfunction was significantly lower than that of the laparoscopic group (P < 0.05).The sleep time of the robot group was significantly longer, and the comfort level of the robot group was significantly higher than that of the laparoscopic group (P < 0.001).

Conclusion The Da Vinci robot-assisted laparoscopic preresection of rectal cancer can shorten the catheter indwelling time of patients, improve the success rate of urination, relieve the incidence of complications related to catheter indwelling, relieve the pain degree of patients, and improve comfort.