title: Penile rehabilitation protocol after robot-assisted radical prostatectomy: assessment of compliance with phosphodiesterase type 5 inhibitor therapy and effect on early potency.
abstract: METHODS
  Therapy (case series).
  
  
  METHODS
  4.
  
  
  OBJECTIVE
  To evaluate factors that affect compliance in men who enroll in a phosphodiesterase type 5 inhibitor (PDE5I) protocol after nerve-sparing robot-assisted prostatectomy (RAP), and report on short-term outcomes, as PDE5Is may help restore erectile function after RAP and patient adherence to the regimen is a factor that potentially can affect outcome.
  
  
  METHODS
  We prospectively followed 77 men who had nerve-sparing RAP and enrolled in a postoperative penile rehabilitation protocol. The men received either sildenafil citrate or tadalafil three times weekly. The minimum follow-up was 8 weeks. Potency was defined as erection adequate for penetration and complete intercourse. Compliance was defined as men adhering to the regimen for > or =2 months.
  
  
  RESULTS
  The mean age of the cohort was 57.8 years and the median follow-up was 8 months. In all, 32% of the men discontinued the therapy <2 months after RAP and were deemed noncompliant with an additional 39% discontinuing therapy by 6 months, with the high cost of medication being the primary reason (65%). Long-term compliance and preoperative erectile dysfunction were independent predictors of potency return after adjusting for age and nerve sparing.
  
  
  CONCLUSIONS
  The high cost of medication remains a significant barrier to maintaining therapy. Noncompliance to PDE5I therapy in a tertiary care centre was much higher than reported in clinical trial settings. With longer-term follow-up, we need to further define the factors that improve overall recovery of sexual function after RAP.
authors.affiliation: Department of Urology, Columbia University Medical Center, New York, NY, USA. DJL2129@columbia.edu
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Lee
authors.forename: Philippa
authors.initials: P
authors.lastname: Cheetham
authors.forename: Ketan K
authors.initials: KK
authors.lastname: Badani
mesh_terms: D002243:Carbolines / Q000627:therapeutic use; D007172:Erectile Dysfunction / Q000534:rehabilitation*; D006801:Humans; D008297:Male; D055118:Medication Adherence; D008875:Middle Aged; D017060:Patient Satisfaction; D010726:Phosphodiesterase Inhibitors / Q000627:therapeutic use*; D010879:Piperazines / Q000627:therapeutic use; D011183:Postoperative Complications / Q000534:rehabilitation*; D011446:Prospective Studies; D011468:Prostatectomy / Q000379:methods*; D011471:Prostatic Neoplasms / Q000601:surgery*; D011687:Purines / Q000627:therapeutic use; D012371:Robotics; D000068677:Sildenafil Citrate; D013450:Sulfones / Q000627:therapeutic use; D000068581:Tadalafil; D020196:Trauma, Nervous System / Q000517:prevention & control; D016896:Treatment Outcome
chemical_list: D002243:Carbolines; D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068581:Tadalafil; D000068677:Sildenafil Citrate