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Related Experiment Videos

Tinnitus and cochlear implantation.

Nicola Quaranta1, Sherryl Wagstaff, David M Baguley

  • 1Audiology Department, Addenbrooke's Hospital, Cambridge, UK.

International Journal of Audiology
|September 11, 2004
PubMed
Summary
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Cochlear implantation can significantly reduce tinnitus perception in most patients. Unilateral cochlear implant use generally improves, rather than worsens, tinnitus in the opposite ear, challenging previous theories.

Area of Science:

  • Otorhinolaryngology
  • Audiology
  • Neuroscience

Background:

  • Tinnitus is a heterogeneous condition with varied causes and perceptions.
  • Understanding tinnitus in cochlear implant (CI) candidates offers insights into cochlear dysfunction and tinnitus.
  • Changes in tinnitus post-CI surgery or activation are crucial for patient counseling.

Purpose of the Study:

  • To review tinnitus experiences in patients undergoing cochlear implantation.
  • To investigate the link between cochlear dysfunction and tinnitus.
  • To evaluate the impact of CI use, particularly unilateral devices, on tinnitus and test hypotheses about sound therapy.

Main Methods:

  • A literature search identified 32 relevant papers.
  • Analysis of reported tinnitus prevalence, onset, and changes in CI candidates.

Related Experiment Videos

  • Evaluation of tinnitus outcomes associated with electrode insertion, CI activation, and unilateral CI use.

    • Main Results:

    • Up to 86% of adult CI candidates experience tinnitus pre-surgery; it's troublesome for about 27%.
    • Electrode insertion rarely induces tinnitus (up to 4%).
    • CI use reduces tinnitus intensity/awareness in up to 86% of patients, with rare exacerbation (up to 9%). Unilateral CI use typically reduces contralateral tinnitus (up to 67%).

    Conclusions:

    • Cochlear implantation is often effective in managing tinnitus.
    • Unilateral CI use does not appear to exacerbate contralateral tinnitus, contrary to some theories.
    • The findings support the use of CIs in tinnitus management and inform patient counseling.