title: Effect of cochlear implant technology in sequentially bilaterally implanted adults.
abstract: OBJECTIVE
  Bilateral sequential cochlear implantation outcomes are dependent on many different factors. Newer technology in the second implanted ear may also contribute to outcome. This study examines the effect of cochlear implant technology on speech recognition outcomes in a population of adult patients who have undergone bilateral sequential implantation using different technologies in each ear.
  
  
  METHODS
  Retrospective chart review.
  
  
  METHODS
  Tertiary referral center.
  
  
  METHODS
  Twenty adults who underwent bilateral sequential cochlear implantation with different technologies and processing strategies in each ear were patients for this study. Control Group A included patients (n = 8) who were simultaneously implanted, and Control Group B (n = 3) were patients who were sequentially implanted with the same technology.
  
  
  METHODS
  Bilateral sequential cochlear implantation.
  
  
  METHODS
  The outcome measure was the Consonant-Nucleus-Consonant monosyllabic word test administered in each implanted ear and in the binaural condition before and 1 year after operation. A multivariate analysis was performed to account for factors including duration of deafness, length of device usage, and severity of deafness.
  
  
  RESULTS
  There was significant improvement from before to 1 year after the operation in word scores for the individual ears and in the binaural condition for all groups. All patients were consistent users of both devices, and the use of different technology in the second implanted ear did not affect the patients' ability to benefit from bilateral implantation despite the use of different devices and processing strategies.
  
  
  CONCLUSIONS
  Bilateral sequential implantation with newer and/or differing technology in the second implanted ear did not reduce the benefits of bilateral stimulation and should not be considered a deterrent to second-sided implantation.
authors.affiliation: Department of Otolaryngology, New York University School of Medicine, NYU Langone Medical Center, New York, New York 10016, USA.
authors.forename: Cameron L
authors.initials: CL
authors.lastname: Budenz
authors.forename: J Thomas
authors.initials: JT
authors.lastname: Roland
authors.forename: James
authors.initials: J
authors.lastname: Babb
authors.forename: Peter
authors.initials: P
authors.lastname: Baxter
authors.forename: Susan B
authors.initials: SB
authors.lastname: Waltzman
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D001301:Audiometry, Pure-Tone; D019929:Cochlear Implantation; D003054:Cochlear Implants / Q000639:trends*; D007839:Functional Laterality / Q000502:physiology; D006312:Hearing Loss, Bilateral / Q000601:surgery*; D006801:Humans; D012086:Reoperation; D012189:Retrospective Studies; D013067:Speech Perception / Q000502:physiology; D013672:Technology; D016896:Treatment Outcome