title: Outcomes of cochlear reimplantation in adults.
abstract: OBJECTIVE
  To determine the indications for, and auditory outcomes following, cochlear reimplantation in adults and investigate factors influencing outcome.
  
  
  METHODS
  Retrospective case series.
  
  
  METHODS
  Cochlear implant program in a tertiary care hospital.
  
  
  METHODS
  Thirty adults (32 ears) who have undergone cochlear reimplantation in the ipsilateral ear.
  
  
  METHODS
  Explantation and reimplantation of cochlear implant.
  
  
  METHODS
  Speech discrimination as measured using Bamford-Kowal Bench sentence testing in quiet (BKBq) and noisy (BKBn) environments.
  
  
  RESULTS
  Best BKBq improved from 58.5% to 71.4% (p = 0.0242), and BKBn improved from 60.9% to 67.2% (p = 0.826) after reimplantation. Device failure was the most common indication for reimplantation. There was no significant difference in failure rate or outcome between implant manufacturers. The mean time to reimplantation was 4.7 years, and this was not related to auditory outcome. Otosclerosis and Ménière's disease may predispose to a worse auditory outcome after reimplantation.
  
  
  CONCLUSIONS
  Cochlear reimplantation does not have a detrimental effect on auditory outcomes and in some cases results in improved speech perception.
authors.affiliation: *Medical Student, University of Manchester; †Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre; ‡Adult Cochlear Implant Programme; §Department of Audiology, Manchester Royal Infirmary; ∥School of Cancer and Enabling Services; and ¶Respiratory and Allergy Centre, Institute of Inflammation and Repair, University of Manchester, Manchester, United Kingdom.
authors.forename: Simran
authors.initials: S
authors.lastname: Mahtani
authors.forename: Fergal
authors.initials: F
authors.lastname: Glynn
authors.forename: Deborah Jane
authors.initials: DJ
authors.lastname: Mawman
authors.forename: Martin Paul
authors.initials: MP
authors.lastname: O'Driscoll
authors.forename: Kevin
authors.initials: K
authors.lastname: Green
authors.forename: Iain
authors.initials: I
authors.lastname: Bruce
authors.forename: Simon Richard Mackenzie
authors.initials: SR
authors.lastname: Freeman
authors.forename: Simon Kingsley Wickham
authors.initials: SK
authors.lastname: Lloyd
mesh_terms: D000328:Adult; D000368:Aged; D003051:Cochlea / Q000601:surgery; D019929:Cochlear Implantation / Q000379:methods*; D003054:Cochlear Implants; D004868:Equipment Failure; D005260:Female; D034381:Hearing Loss / Q000601:surgery*; D006801:Humans; D008297:Male; D008575:Meniere Disease; D008875:Middle Aged; D009622:Noise; D012086:Reoperation; D012189:Retrospective Studies; D013067:Speech Perception; D016896:Treatment Outcome