Effect of ICCAUT Strategy on Postoperative Urinary Dysfunction After Radical Rectal Cancer Surgery

For patients in the ICCAUT group, intermittent catheter clamping will be initiated at 9:00 AM. The catheter will be clamped for 3 h, followed by a 5-minute release, which is one cycle. The next cycle will begin after the cycle was completed. Catheter training is to conclude at 10:00 PM on the first postoperative day, and the catheter is left open during the night. At 6:00 AM on the second postoperative day, another cycle of catheter training will be performed, with the catheter removed at 9:00 AM after the bladder is empty. During the training period, if the patient experiences a strong urge to urinate before the 3-hour clamping time is over, the clamping can be released in advance for 5 min, allowing the patient to proceed to the next cycle of bladder training. Each time the catheter is released, we will encourage the patients to actively initiate urination to facilitate complete bladder emptying.

For patients in the free draining group, no intervention will be performed on the catheter during this period. The catheter will be removed at 9:00 AM on postoperative day two.