Hello Thanks for your query,based on the facts that you have posted it appears that your father has obstructive urinary symptoms due to enlarged prostate and needs to be investigated thorouly to asees the need for surgery. Please consult qualified urologist for clinical and digital rectal examination and get following investigations done 1) Urine routine and culture 2) Ultrasound scanning ao abdomen with post void urine rsidue . 3) Uroflometry. He needs endoscopic resection of prostate (TURP)to relieve the obstruction by enlarged prostate. This is a gold standard surgery practised world wide and offers permanent cure and helps to improve quality of life in elderly patients. Dr patil.