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    Programming characteristics of cochlear implants in children: effects of etiology and age at implantation

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    IJA Article_CI paper_Final .pdf (535.6Kb)
    Date
    2017
    Author
    Incerti, Paola V.
    Ching, Teresa YC
    Hou, Sanna
    Van Buynder, Patricia
    Flynn, Christopher
    Cowan, Robert
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    Abstract
    Objective: We investigated effects of etiology and age at implantation on changes in threshold (T) levels, comfortable (C) levels and dynamic range (DR) for cochlear implants (CIs) in children over the first five years of life Design: Information was collected at 6-months post-activation of CIs, and at 3 and 5 years of age. Study sample: 161 children participating in the Longitudinal Outcomes of Children with Hearing Impairment (LOCHI) study. Results: Children with neural and structural cochlear lesions had higher T-levels and C-levels as compared to those without these conditions. Parameter settings varied from manufacturer’s defaults more often in the former than in the latter group. Investigation of the effect of age at implantation for children without neural and structural cochlear lesions showed that those implanted at ≤12months of age had higher T-levels and narrower DR at 6-months post-activation, as compared to the later-implanted group. For both early- and later-implanted groups, the C-levels at 6-months post-activation were lower than those at age 3 and 5 years. There were no significant differences in T-levels, C-levels, or DR between age 3 and 5 years. Conclusions: Etiology and age at implantation had significant effects on T-levels and C-levels.
    URI
    https://dspace.nal.gov.au/xmlui/handle/123456789/818
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