(334) EARLY MECHANICAL FAILURE IS RARE BUT AUTO INFLATION IS COMMON AFTER PENILE PROSTHESIS PLACEMENT

Abstract Introduction Penile prosthesis (PP) implantation is associated with high patient satisfaction in patients with medically refractory erectile dysfunction (ED). There remains a paucity in the literature regarding the temporal evolution of patient following PP surgery. Objective We sought to evaluate mechanical-associated outcomes in our Penile prosthesis (PP) cohort. Methods We analyzed our prospective penile registry that includes patient-completed surveys regarding device outcomes administered at 6 and 12-months after PP placement. We specifically examined the questions: “Have you had another [prosthesis] surgery since your first operation?”; and, “Does the device ever inflate or deflate on its own, if Yes how bothersome is this for you on a scale of 1-10 (1- very bothersome, 10 no bother)?”. Chart review was performed to identify pertinent variables including reservoir location (retropubic vs submuscular) and need for prosthesis revision for survey respondents. Results A total of 304 patients were enrolled in the registry. Of these, 101 completed the 6-month assessment and 79 completed the 1-year survey. The vast majority of PP were Coloplast (91.4%) utilizing the “classic” pump. Mean chart review follow up was approximately 3 years. One device was explanted for implant infection. No additional operations were reported for mechanical failure. Auto-inflation (AI) was reported in 38 patients at 6 months and 21 patients at 12 months. AI was most common in patients with submuscular reservoir placement (75.9% of those who reported AI at 6 months and 50% at 12 months respectively). The relative risk of developing AI was doubled in patients with a submuscular reservoir [2.2 (1.05-3.44); p < 0.001)]. Degree of bother had a reported median of 5 (3.75-9) at 6 months and became less bothersome after 12-months year with a reported median of 7 (5-9) (p = 0.230) [Fig. 1]. Conclusions Early Penile prosthesis mechanical failure requiring revision surgery did not occur in our cohort but patient-reported auto-inflation was identified more frequently than previously reported. Further study is warranted, but patients may benefit from pre-operative counseling regarding the incidence of auto-inflation. Disclosure Yes, this is sponsored by industry/sponsor: Coloplast. Clarification: Industry funding only - investigator initiated and executed study.