title: The effects of residual hearing in traditional cochlear implant candidates after implantation with a conventional electrode.
abstract: OBJECTIVE
  To analyze the effects of residual hearing on postoperative speech performance in traditional cochlear implant (CI) patients implanted with a conventional electrode.
  
  
  METHODS
  Retrospective review.
  
  
  METHODS
  Academic tertiary referral center.
  
  
  METHODS
  A total of 129 adults implanted by a single surgeon at a tertiary care facility between June 2005 and November 2010 with measurable preoperative pure tone thresholds at any frequency were included.
  
  
  METHODS
  Cochlear implantation with a conventional electrode via an anterior inferior cochleostomy.
  
  
  METHODS
  Speech perception using monosyllabic word scores in quiet and sentences in quiet and noise in the electric (CI-only) condition of the implanted ear. Preservation of hearing was defined as complete for postoperative thresholds within 10 dB of preimplant values and partial if greater than 11 dB. Pure tone audiometry and speech perception testing were performed preoperatively and at regular intervals postoperatively, with the 1-year evaluation being the final outcome period.
  
  
  RESULTS
  Preservation at any frequency or level was not a factor in speech perception outcome, although preservation was more common in low frequencies. Hearing preservation was correlated with younger age at implantation, but was not related to length of hearing loss, cause of deafness, device type, sex, preoperative speech performance, or low-frequency pure-tone average.
  
  
  CONCLUSIONS
  Hearing can be preserved in traditional CI patients implanted with a conventional electrode. Although preservation of hearing may have implications for future technology, it is not currently correlated with speech performance in the CI-only condition.
authors: Department of Otolaryngology, New York University School of Medicine, New York, NY 10016, USA.
authors: Maura K
authors: MK
authors: Cosetti
authors: David R
authors: DR
authors: Friedmann
authors: Bovey Z
authors: BZ
authors: Zhu
authors: Selena E
authors: SE
authors: Heman-Ackah
authors: Yixin
authors: Y
authors: Fang
authors: Robert G
authors: RG
authors: Keller
authors: William H
authors: WH
authors: Shapiro
authors: J Thomas
authors: JT
authors: Roland
authors: Susan B
authors: SB
authors: Waltzman
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001301:Audiometry, Pure-Tone; D001307:Auditory Perception / Q000502:physiology*; D001309:Auditory Threshold / Q000502:physiology*; D019929:Cochlear Implantation / Q000379:methods*; D003054:Cochlear Implants; D005260:Female; D006309:Hearing / Q000502:physiology*; D034381:Hearing Loss / Q000503:physiopathology / Q000601:surgery*; D006320:Hearing Tests; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D013067:Speech Perception; D016896:Treatment Outcome