title: Long-term survival and patient satisfaction with inflatable penile prosthesis for the treatment of erectile dysfunction.
abstract: OBJECTIVE
  We investigated the long-term survival and patient satisfaction with an inflatable penile prosthesis as a treatment for refractory erectile dysfunction (ED).
  
  
  METHODS
  Between July 1997 and September 2014, a total of 74 patients underwent implantation of an inflatable penile prosthesis. The present mechanical status of the prosthesis was ascertained by telephone interview and review of medical records, and related clinical factors were analyzed by using Cox proportional hazard regression model. To investigate current status and satisfaction with the devices, novel questionnaires consisting of eight items were administered.
  
  
  RESULTS
  The mean (±standard deviation) age and follow-up period were 57.0±12.2 years and 105.5±64.0 months, respectively. Sixteen patients (21.6%) experienced a mechanical failure and 4 patients (5.4%) experienced a nonmechanical failure at a median follow-up of 98.0 months. Mechanical and overall survival rates of the inflatable penile prosthesis at 5, 10, and 15 years were 93.3%, 76.5%, and 64.8% and 89.1%, 71.4%, and 60.5%, respectively, without a statistically significant correlation with host factors including age, cause of ED, and presence of obesity, hypertension, and diabetes mellitus. Overall, 53 patients (71.6%) completed the questionnaires. The overall patient satisfaction rate was 86.8%, and 83.0% of the patients replied that they intended to repeat the same procedure. Among the 8 items asked, satisfaction with the rigidity of the device received the highest score (90.6%). In contrast, only 60.4% of subjects experienced orgasm.
  
  
  CONCLUSIONS
  The results of our study suggest that excellent long-term reliability and high patient satisfaction rates make the implantation of an inflatable penile prosthesis a recommendable surgical treatment for refractory ED.
authors.affiliation: Department of Urology, Yeungnam University College of Medicine, Daegu, Korea.
authors.forename: Yoon Seob
authors.initials: YS
authors.lastname: Ji
authors.affiliation: Department of Urology, Yeungnam University College of Medicine, Daegu, Korea.
authors.forename: Young Hwii
authors.initials: YH
authors.lastname: Ko
authors.affiliation: Department of Urology, Yeungnam University College of Medicine, Daegu, Korea.
authors.forename: Phil Hyun
authors.initials: PH
authors.lastname: Song
authors.affiliation: Department of Urology, Yeungnam University College of Medicine, Daegu, Korea.
authors.forename: Ki Hak
authors.initials: KH
authors.lastname: Moon
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D007172:Erectile Dysfunction / Q000503:physiopathology / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D009948:Orgasm; D017060:Patient Satisfaction; D015917:Penile Prosthesis; D011475:Prosthesis Failure; D019919:Prosthesis Implantation / Q000379:methods; D016896:Treatment Outcome
keywords: Erectile dysfunction; Patient satisfaction; Penile prosthesis; Survival