炎症性中耳病変を伴う症例の人工内耳手術

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  • Cochlear Implant Surgery in Patients with Inflammatory Lesions in the Middle Ear.

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Treatment of patients with severe bilateral hearing loss by cochlear implants usually requires that there be no inflammation in the middle ear. We treated three patients in whom the electrophysical criteria for cochlear implant were fulfilled. However, there had middle ear infections. As a first step we performed a myringoplasty, a mastoidectomy with reconstruction of the posterior wall of the external canal and a mastoidectomy with insertion of a ventilation tube. Approximately one year after the first operation, a Cochlear implant was performed. There was no major complication due to the electrode insertion into the cochlea and the results of speech perception were not different from those in patients with normal middle ears. Therefore, it is considered that this twostage operation in patients with a middle ear infection makes it possible to do cochlear implants in some patients who it was previously thought to have contraindications.

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