title: Is there a deafness duration limit for cochlear implants in post-lingual deaf adults?
abstract: CONCLUSIONS
  Patients with post-lingual deafness should not be excluded from cochlear implantation (CI) on the basis of duration of deafness. We found that the prognosis was favorable in patients who developed deafness after adolescence, even in those with extremely long-term deafness.
  
  
  OBJECTIVE
  CI is an effective treatment for post-lingual deafness. However, it remains unclear whether CI would benefit patients with extremely long-term deafness. We evaluated the auditory performance after CI of patients who had been deaf for more than 30 years.
  
  
  METHODS
  The study enrolled 81 adults with post-lingual deafness. Speech perception tests were performed preoperatively and 12 months postoperatively, and factors affecting the postoperative auditory performance were investigated. The subjects were divided into groups according to the duration of deafness and the postoperative speech perception scores were compared.
  
  
  RESULTS
  A marked improvement in the open-set speech perception scores (mono/disyllabic words and sentences) after implantation was seen in all groups, and no significant difference in the improvement in speech perception scores was observed among the groups. Age at onset of deafness was closely related to the postoperative performance, and patients who had lost their hearing before adolescence performed poorly.
authors.affiliation: Department of Otorhinolaryngology, Yonsei University College of Medicine , Seoul.
authors.forename: In Seok
authors.initials: IS
authors.lastname: Moon
authors.forename: Sera
authors.initials: S
authors.lastname: Park
authors.forename: Hee-Nam
authors.initials: HN
authors.lastname: Kim
authors.forename: Won-Sang
authors.initials: WS
authors.lastname: Lee
authors.forename: Sung Huhn
authors.initials: SH
authors.lastname: Kim
authors.forename: Jung-Ha
authors.initials: JH
authors.lastname: Kim
authors.forename: Jae Young
authors.initials: JY
authors.lastname: Choi
mesh_terms: D000293:Adolescent; D000328:Adult; D017668:Age of Onset; D000368:Aged; D003054:Cochlear Implants; D003638:Deafness / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D013067:Speech Perception; D013997:Time Factors; D055815:Young Adult