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Unilateral auditory performance before and after bilateral sequential cochlear implantation.

Stanley Pelosi1, George B Wanna, Rene H Gifford

  • 1*Department of Otolaryngology, and †Department of Hearing and Speech Sciences, Vanderbilt University Medical Center, Nashville, Tennessee, U.S.A.; and ‡Universidade de São Paulo, São Paulo, Brazil.

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology
|October 19, 2013
PubMed
Summary
This summary is machine-generated.

Preimplantation hearing status does not impact sequential cochlear implantation (SCI) outcomes. This suggests preoperative audiometry is less critical for selecting the initial implant ear.

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Area of Science:

  • Otolaryngology
  • Audiology
  • Neurosurgery

Background:

  • Sequential cochlear implantation (SCI) involves implanting one ear at a time.
  • The impact of preimplantation hearing on the choice of the first implanted ear is not well understood.
  • Understanding this relationship can refine preoperative counseling for SCI patients.

Purpose of the Study:

  • To investigate the relationship between preimplantation unilateral hearing status and postimplantation auditory performance in SCI patients.
  • To determine if preoperative hearing levels influence the choice of the initial cochlear implant ear.

Main Methods:

  • Retrospective case series of adult and pediatric patients undergoing SCI.
  • Assessment of unilateral auditory performance before and after implantation.
  • Definition of "better-hearing ear" based on pure tone average, speech awareness/reception thresholds, and speech perception scores.

Main Results:

  • Ninety patients underwent SCI; 56 with sufficient bilateral implant data were analyzed.
  • Preoperative hearing status of the first-implanted ear (better, poorer, or equal) did not significantly affect long-term interaural performance differences.
  • The first-implanted ear showed better speech perception in 41% of adults and 59% of pediatric patients.

Conclusions:

  • Preimplantation unilateral hearing status does not predict relative interaural performance after sequential cochlear implantation.
  • Preoperative audiometry and speech recognition scores may have limited value in guiding the selection of the initial implant ear.