Abstract
BackgroundSome adolescents have hearing impairments characterized by normal or slightly elevated thresholds in the low and mid-frequency bands (below 1500Hz) and nearly total deafness in the high frequency range. These patients often remain beyond the scope of effective hearing aid treatment. Case reportThis study presents the case of a 16-year-old adolescent with good hearing in the range 125–1500Hz and deafness at other frequencies. An implant was used to restore hearing at high frequencies, while preserving low and mid frequency acoustic hearing in the implanted ear. This is described as electro-natural stimulation (ENS) of the inner ear. ConclusionsThe results demonstrate that low and mid frequency hearing (up to 1500Hz) can be preserved using the round window surgical technique. A substantial improvement in speech discrimination was also observed when electrical stimulation on one side was combined with acoustic stimulation on both sides. There is scope to extend qualifying criteria for cochlear implantation to include adolescents who are suited to ENS.
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