Why is it necessary to catheterize before gynecological surgery? 1.Because the uterus in gynecology is immediately in front of the bladder, emptying the bladder is the first step to prevent damage to the bladder caused by bladder filling during surgery. 2.To prevent the occurrence of urinary retention after anesthesia. 3.To facilitate the observation of the patient’s urine volume during and after surgery. What should I pay attention to when indwelling catheterization? 1.Properly fix the urinary catheter and urine bag. 2.The height of the urine bag should not be higher than the bladder to prevent urine reflux causing urinary tract infection. 3, long-term indwelling catheterized patients should do bladder function training before removing the urinary catheter, that is, intermittent clip Bi urinary catheter. Usually open the urinary catheter every 2 hours at the beginning, then every 4 hours, if there is a sense of holding urine at any time urinary catheter. 4.Patients who can eat water are encouraged to drink more water and forbidden to drink strong tea and coffee to prevent urine concentration from producing crystals and blocking the tube. 5.Disinfect the urethral opening twice a day and change the urine bag twice a week. 6.Observe the volume, color and taste of urine, and deal with any abnormalities in time. What should I pay attention to after removal of urinary catheter? 1.Drink more water, drink at least 1500ml of water daily to prevent urinary tract infection. 2.The first urination after urethral catheter removal may cause a burning sensation in the urethra, do not be nervous, breathe deeply to make the sphincter relax to facilitate urination. 3, maintain a good state of mind, eliminate tension and anxiety, and establish a good environment for urination.