<prompt> The most common complication of transurethral resection of prostate TURP:Erectile dysfunctionRetrograde ejaculationUrinary incontinenceUrethral stricture disease  <response>: TURP- Gold standard treatment for BPH Complications of TURP- MC- Retrograde ejaculation 75 of cases- Impotence 10 of cases- Incontinence 1 of cases Retrograde ejaculation Erection is due to parasympathetic system and Ejaculation is due to sympathetic system. Internal urinary sphincter is under the control of L1 sympathetic ganglion Normally, at the time of ejaculation, Internal urinary sphincter is closed. Retrograde ejaculation is seen after o TURP Injury of Internal urinary sphincter o Bilateral Lumbar sympathectomy o a Blockers Relaxation of Smooth muscles of internal urinary sphincter -Late complications MC- Bladder neck stenosis 4 Urethral Stricture 3.6 