当院における再手術・追加手術を要した小児の人工内耳症例 5 例の検討

  • 菅谷 明子
    岡山大学大学院医歯薬学総合研究科 耳鼻咽喉・頭頸部外科
  • 福島 邦博
    岡山大学大学院医歯薬学総合研究科 耳鼻咽喉・頭頸部外科
  • 片岡 祐子
    岡山大学大学院医歯薬学総合研究科 耳鼻咽喉・頭頸部外科
  • 前田 幸英
    岡山大学大学院医歯薬学総合研究科 耳鼻咽喉・頭頸部外科
  • 笠井 紀夫
    岡山大学大学院医歯薬学総合研究科 耳鼻咽喉・頭頸部外科 公益財団法人テクノエイド協会
  • 平井 美紗都
    岡山大学大学院医歯薬学総合研究科 耳鼻咽喉・頭頸部外科
  • 長安 吏江
    岡山大学大学院医歯薬学総合研究科 耳鼻咽喉・頭頸部外科
  • 西﨑 和則
    岡山大学大学院医歯薬学総合研究科 耳鼻咽喉・頭頸部外科

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  • Five cases requiring revision or middle ear surgery after cochlear implantation

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  Revision/additional surgeries after cochlear implants are sometimes required because of device failure, hematoma, infections, and malinsertion/extrusion of electrodes. Younger implant age may also increase the incidence of additional ear surgery due to the immaturity of the Eustachean tubes. Since 1992, we have conducted 150 pediatric cochlear implants with three revisions (2.0%) or two additional surgeries (1.3%) required so far. All three revision cases were due to device failure, and ipsilateral explantation/reimplantation surgeries were conducted. The two additional cases included a case of ventilation tube malplacement and a case of myringoplasty. A case with implant failure after head trauma is reported here in detail.<br/>  A 7-year-old girl who received cochlear implantation at the age of two visited our hospital because she didn't respond to sound after a head trauma. Her speech perception had been good until her head was struck by a swing in a park, and she came to our hospital four days later. An impedance check or NRT of the cochlear implant was impossible, and explantation and reimplantation of the same side cochlear implant was performed six weeks later. Insertion of the electrodes was extremely difficult because of inner ear malformation, but the right position of the electrode was finally confirmed by X-ray. Her speech perception and language development were good after the operation.

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