聴覚障害の両親をもつ重度難聴児への人工内耳の適応

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  • Language Performance after Cochlear Implant in a Deaf Child with Deaf Parents

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The number of deaf children who use cochlear implant has been increasing in tandem with advances in Cochlear implants, and implanted children have improved substantially in their language and social abilities. Deaf children with deaf parents, however, have seldom been implanted partly because their parents frequently express skepticism toward cochlear implants, so use of sign language is normally more common than speech in their home situation. Here, we report on a girl in a deaf family who received a cochlear implant at 1 year and 11 months. Preoperative evaluations of her auditory perceptual performance and language development revealed slight developmental delays compared to her hearing peers. Postoperatively, however, she achieved age-appropriate linguistic competence at the age of 3 years and 9 months. Our intervention, including first fitting of a hearing aid and subsequent cochlear implant, provided satisfactory language development in this case. In addition, the experience of her hearing grandmother and aunt having raised the mother of the present case played an important role in her effective acquisition of language.

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