幼小児のABRと純音聴力検査結果の統計的検討 A Statistical Study on Auditory Brainstem Response and Pure Tone Audiometory in Children with Hearing Loss

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幼小児129名(男67名,女62名)244耳について,クリック音による聴性脳幹反応聴力検査(ABR)と同一症例の純音聴力検査結果を比較し,ABRの信頼性および限界を検討した.ABRは生後1ヵ月~12歳,純音聴力検査は2歳~12歳に施行された.ABR閾値は純音検査の会話音域聴力レベルと強い相関(相関係数0.92)が認められ,感音難聴,伝音難聴ともに,また年齢別ではABR検査時1歳未満も会話音域聴力レベルとの一致率が高く,有用性が認められた.聴力型による検討では,少数ではあるが低音障害型などに一致率の低いものがあり,ABRを施行した患児に対しては,CORや遊戯聴力検査の結果が得られるまで,言語発達も含めて追跡検査する必要があると思われた.またABR無反応群では,ほぼ全例が重度難聴であり,一致はみたが,聴覚活用の期待できる100dBHL台以下が58%と過半数を占めており,説明や補聴器のfittingには留意を要すると考えた.

We compared the threshold of auditory brainstem response (ABR) with that of pure tone audiometry on 129 children (67 boys and 62 girls). ABR was administered to the subjects between the age of 1 month and 12 years old, and the pure tone audiometry between 2 years and 12 years old. In ABR, clicks of 0.2 milliseconds in duration were used. The results showed that there was a high correlation (r=.92) between the threshold of ABR and the pure tone audiometry in the speech frequencies. The types of hearing losses did not affect the results. Also, no differences in the correlation was found among the different age groups. In the patients with sensorineural hearing loss in the low tones, differences were observed between ABR and the pure tone audiometry: one such case was described in this paper. Therefore, it is suggested that clinicians should follow up the children who were tested with ABR until conditioned orientation response audiometry (COR) or pure tone audiometry can be performed. We also studied the patient group with no response in ABR (at 106 dBnHL). While most of them were determined as having a severe hearing loss in the pure tone audiometry, 58% of them were under 100-110 dBHL, for whom utilizing hearing ability may be expected. Clinicians, therefore, must be careful in giving information and fitting hearing aids especially for those children with hearing loss at the level of no response in ABR.

収録刊行物

  • 聴能言語学研究

    聴能言語学研究 15(1), 13-21, 1998-04-30

    Japanese Association of Communication Disorders

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各種コード

  • NII論文ID(NAID)
    10008101805
  • NII書誌ID(NCID)
    AN10091280
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09128204
  • NDL 記事登録ID
    4500208
  • NDL 雑誌分類
    ZF1(教育) // ZS47(科学技術--医学--治療医学・看護学・漢方医学)
  • NDL 請求記号
    Z7-1914
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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