100gm (ref: Schwaz 9/e p1471; Smith's Urology 17/e p354)UTI: Recurrent episodes of UTI (and not a single episode) are an absolute indication for surgery of prostate. Hypeension: Alpha blockers which are first line medical therapy for BPH lower the blood pressure and thus are helpful in hypeensive persons.Management of BPH Management is primarily directed by symptoms. Mild symptoms can be managed with watchful waiting. More severe symptomatic patients are treated with medicines (alpha blockers, 5-alpha reductase inhibitors or combination of both). Surgery is recommended if the paient is having problems despite medical therapy. Absolute indications for surgery as listed in Smith's Urology is given below.Absolute indications for surgical treatment of BPH1) Refractory urine retention (failing at least one attempt at catheter removal)2) Recurrent UTI from BPH3) Bladder stones d/t BPH4) Renal insufficiency d/t BPH5) Large bladder diveicula secondary to BPH6) Recurrent gross hematuria from BPHUpper tract dilatation is an indication for surgery according to Schwaz.Medical therapyAlpha-blockers (terazosin, doxazosin, and tamsulosin)Alpha-blockers help is reducing the symptoms of BPH by blocking the alpha 1 adrenoreceptors present in human prostate and bladder base.5-Alpha-reductase inhibitors (Finasteride, Dutasteride) ?5-alpha-reductase inhibitors block the conversion of testosterone to dihydrotestosterone. This thus results in reduction in the size of the gland and improvement in symptoms (after several months of use).SurgerySurgery for BPH is most commonly performed endoscopically; however, if the prostate gland is quite large (approx >100 g), an open prostatectomy should be performed.The standard endoscopic procedure for BPH is a transurethral resection (TUR) of the prostate.Conventional surgical methods:Transurethral resection of the prostate (most commonly used method)Transurethral incision of the prostate (TUIP)Open simple prostatectomy (simple suprapubic prostatectomy, simple retropubic prostatectomy) ?- When the prostate is too large to be removed endoscopically, an open enucleation is necessary. What constitutes"too large" is subjective and varies depending upon the surgeon's experience with TURP. Glands >100 g areusually considered for open enucleation. Open prostatectomy may also be initiated when concomitant bladderdiveiculum or a bladder stone is present or if dorsal lithotomy positioning is not possible.- Open prostatectomies can be done with either a suprapubic or retropubic approach. A simple suprapubic prostatectomy is performed transvesically and is the operation of choice in dealing with concomitant bladder pathology.Minimally invasive methods:1. Laser therapy (Nd:YAG and holmium:YAG )Transurethral electrovaporization of the prostateMicrowave HypehermiaTransurethral needle ablation of the prostate?High-intensity focused ultrasound for thermal tissue ablationIntraurethral stents--stents are endoscopically placed in the prostatic fossa and are designed to keep the prostatic urethra patent. They are usually covered by urothelium within 4-6 months after inseion. These devices are typically used for patients with limited life expectancy who are not deemed to be appropriate candidates for surgery or anesthesia.">