Unilateral and bilateral cochlear implants and the implant-plus-hearing-aid profile: comparing self-assessed and measured abilities

Int J Audiol. 2008 Aug;47(8):505-14. doi: 10.1080/14992020802070770.

Abstract

Patients fitted with one (CI) versus two (CI+CI) cochlear implants, and those fitted with one implant who retain a hearing aid in the non-implanted ear (CI+HA), were compared using the speech, spatial, and qualities of hearing scale (SSQ) (Gatehouse & Noble, 2004). The CI+CI profile yielded significantly higher ability ratings than the CI profile in the spatial hearing domain, and on most aspects of other qualities of hearing (segregation, naturalness, and listening effort). A subset of patients completed the SSQ prior to implantation, and the CI+CI profile showed consistently greater improvement than the CI profile across all domains. Patients in the CI+HA group self-rated no differently from the CI group, post-implant. Measured speech perception and localization performance showed some parallels with the self-rating outcomes. Overall, a unilateral CI provided significant benefit across most hearing functions reflected in the SSQ. Bilateral implantation offered further benefit across a substantial range of those functions.

Publication types

  • Comparative Study
  • Evaluation Study
  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Audiometry, Speech
  • Auditory Threshold
  • Cochlear Implantation / instrumentation*
  • Cochlear Implantation / methods*
  • Equipment Design
  • Female
  • Hearing Aids*
  • Hearing Loss / diagnosis
  • Hearing Loss / therapy*
  • Humans
  • Male
  • Middle Aged
  • Self-Assessment
  • Sound Localization
  • Speech Perception
  • Treatment Outcome