Hi, I have some information below that may be useful in looking at the effectiveness of TURP. In men who have moderate or severe symptoms of prostate enlargement, transurethral resection of the prostate (TURP) is more effective than watchful waiting in relieving urinary symptoms. Men who are very bothered by their symptoms are most likely to notice great improvement in their symptoms after TURP; men who are not very bothered by their symptoms are less likely to notice a significant change. There is a 75% to 96% chance that symptoms will improve. Generally, men notice an 85% improvement in their American Urological Association (AUA) symptom index score. The benefits of TURP depends on the severity of the symptoms before surgery.1 In men who had mild symptoms before surgery: After surgery, 90% reported mild symptoms, 9% reported moderate symptoms, and 1% reported severe symptoms. In men who had moderate symptoms before surgery: After surgery, 80% reported mild symptoms, 15% reported moderate symptoms, and 5% reported severe symptoms. In men who had severe symptoms before surgery: After surgery, 78% reported mild symptoms, 14% reported moderate symptoms, and 8% reported severe symptoms. There is some minor decrease in the number of times men awaken at night to urinate (nocturia), but surgery may not resolve this problem. Nocturia may be caused by a general tendency of older adults (including women) to awaken during the night. Good luck.