title: The use of an erectogenic pharmacotherapy regimen following radical prostatectomy improves recovery of spontaneous erectile function.
abstract: OBJECTIVE
  It has been suggested that postradical prostatectomy (RP) erectile function outcomes are improved by early use of erectogenic medications. This analysis was designed to assess the ability of a post-RP vasoactive drug program to improve long-term spontaneous erectile function.
  
  
  METHODS
  Men with functional preoperative erections who underwent RP were challenged early postoperatively with oral sildenafil. Nonresponders were switched to intracavernosal injection therapy (ICI). Patients were instructed to inject three times a week. Only patients who presented within 6 months post RP, who completed the International Index of Erectile Function (IIEF) questionnaire on at least three separate occasions after surgery, and who had been followed for at least 18 months were included. Data from men who were committed to rehabilitation were compared with those of men who did not follow the protocol but continued to be followed serially following RP.
  
  
  RESULTS
  There were 58 patients in the rehabilitation (R) group and 74 in the nonrehabilitation (NR) group. No differences existed in mean patient age, comorbidity profile, intraoperative nerve sparing status, or postoperative erectile hemodynamics between the two groups. At 18 months post RP, there were statistically significant differences between the two groups in the percentage of patients who were capable of having medication-unassisted intercourse (R=52% vs. NR=19%, P<0.001); mean erectile rigidity (R=53+/-21% vs. NR=26+/-43%, P<0.01); mean IIEF erectile function (EF) domain scores (R=22+/-6 vs. NR=12+/-14, P<0.01); the percentage of patients with normal EF domain scores (R=22% vs. NR=6%, P<0.01); the percentage of patients responding to sildenafil (R=64% vs. NR=24%, P<0.001); the time to become a sildenafil responder (R=9+/-4 vs. NR=13+/-3 months, P=0.02); and the percentage of patients responding to ICI (R=95% vs. NR=76%, P<0.01).
  
  
  CONCLUSIONS
  The data generated from this nonrandomized study indicate that a pharmacologic penile rehabilitation protocol results in higher rates of spontaneous functional erections and erectogenic drug response after RP.
authors.affiliation: Department of Urology, Weill Medical College of Cornell University, New York, NY 10021, USA. jpm2005@med.cornell.edu
authors.forename: John
authors.initials: J
authors.lastname: Mulhall
authors.forename: Spencer
authors.initials: S
authors.lastname: Land
authors.forename: Marilyn
authors.initials: M
authors.lastname: Parker
authors.forename: W Bedford
authors.initials: WB
authors.lastname: Waters
authors.forename: Robert C
authors.initials: RC
authors.lastname: Flanigan
mesh_terms: D002985:Clinical Protocols; D003075:Coitus / Q000502:physiology*; D007172:Erectile Dysfunction / Q000188:drug therapy* / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010410:Penile Erection / Q000187:drug effects / Q000502:physiology*; D010726:Phosphodiesterase Inhibitors / Q000627:therapeutic use*; D010879:Piperazines / Q000627:therapeutic use*; D011468:Prostatectomy / Q000009:adverse effects / Q000379:methods / Q000534:rehabilitation*; D011471:Prostatic Neoplasms / Q000601:surgery*; D011687:Purines; D000068677:Sildenafil Citrate; D013450:Sulfones; D011795:Surveys and Questionnaires; D013997:Time Factors
chemical_list: D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate