system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Most accurate treatment of erectile dysfunction:
assistant
The correct answer is  A i.e. SildenafilSildenafil is only approved & effective oral agent for erectile dysfunctionQ. It is useful in wide range of e.d.including - pyschogenic, diabetogenic, vasculogenic, post radical prostatectomy (nerve sparing procedure) & spinal cord injury.It acts by inhibiting phosphodiesterase - 5 (PDE-5)Q & releasing NOQ from nerve endings & endotheliumOther t/t for Erectile dysfunction are:PIPE therapy (PapaverineQ/ Phentolamine Induced Penile Erection)- AndrogenIntraurethral - alprostodil (PGE1)Penile prosthasis, vaccum constriction deviceMaster Johnson technique is for premature ejaculationQp Blockers can cause erectile dysfunctionQ