If a 92-year-old person has a long-term indwelling urinary catheter, the catheter is usually replaced once a month, and if the catheter has episodes of clogging or dislodging it should be replaced in a timely manner. 92 of the senior, if there is a urinary retention, because of the age, physical condition is not very good, may be long-term bedridden or have some chronic diseases, the risk of surgery is relatively large, not suitable for surgery, you can consider long-term indwelling catheter. During this period, you should pay attention to drink more water, disinfect the urethral opening with iodophor every day, if the urine color is cloudy, you should give bladder irrigation in time, and if urinary tract infection occurs, you also need to give antibiotic treatment, such as cefixime, levofloxacin and so on. Usually change the catheter once a month, change the urine bag once a week, time the urinary catheter is easy to form stones, not easy to pull out. If the catheter is clogged or dislodged, it should be replaced in time. If there is any abnormality, consult the hospital in time.