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Related Concept Videos

The Cochlea01:13

The Cochlea

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The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
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Audiogram and cochlear implant candidacy--UK perspective.

Srikanth Chundu, Sarah L Flynn

    Cochlear Implants International
    |October 23, 2013
    PubMed
    Summary

    Cochlear implant candidacy requires individual assessment beyond pure-tone audiometry. Current guidelines may exclude patients who could benefit from cochlear implants despite borderline hearing loss.

    Keywords:
    AudiogramCochlear implant candidacyCochlear implant case studyCochlear implantsNICE guidelinesPure tone audiometry

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    Area of Science:

    • Audiology
    • Otorhinolaryngology

    Background:

    • Cochlear implant candidacy criteria have evolved to include individuals with less severe hearing loss.
    • Current candidacy relies on pure-tone audiometry and aided speech testing, which may not fully represent functional hearing.
    • Borderline audiogram results can pose challenges for patients not benefiting from hearing aids.

    Observation:

    • This report details two cases where cochlear implant funding was denied based on pure-tone audiometry falling just outside National Institute for Health and Care Excellence guidelines.
    • Both patients experienced significant functional hearing deficits and did not benefit from hearing aids.

    Findings:

    • Pure-tone audiometry alone is insufficient for determining cochlear implant candidacy.
    • Audiometric thresholds do not always correlate with an individual's real-world hearing difficulties.

    Implications:

    • Cochlear implant candidacy decisions should be individualized, considering quality of life, social impact, and work requirements.
    • Strict adherence to pure-tone audiometry guidelines may prevent timely access to cochlear implants for eligible candidates.
    • Revising candidacy criteria to incorporate functional hearing assessments is crucial for optimizing patient outcomes.