The length of time a urinary catheter is left in place needs to be determined on a patient-by-patient basis. In the case of surgery, catheters left in place to prevent postoperative urinary retention and to avoid the inability to urinate can be removed 24-48 hours after surgery. Patients can get down and move around and urinate on their own. If a patient has urinary retention, the catheter needs to be left in place for 5-7 days for etiologic treatment, and the catheter can be removed only after the condition has improved. If it is removed too early, it may result in the inability to urinate and the need to insert the catheter again. In the case of various surgeries of the urethra that require a catheter to be left in place, it is necessary to leave it in place for about 10-14 days. The catheter can be removed only after the wound in the urethra has healed completely and the infection and scarring period has passed safely. In the case of dysfunctional urination, such as neurogenic bladder or paralysis, the catheter will need to be left in place for a long time and will need to be changed every two weeks.