一側性難聴児における雑音下での文聴取能力とFMシステム利用の効果  [in Japanese] <b>Sentence perception ability in noise and effectiveness of FM system in school-aged children with unilateral hearing loss</b>  [in Japanese]

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Author(s)

    • 小渕 千絵 Obuchi Chie
    • 国際医療福祉大学言語聴覚学科 International University of Health and Welfare, Department of Speech and Hearing Sciences

Abstract

要旨: 一側性難聴による雑音下の文聴取への影響と FM システム利用の効果について検討した。学齢期の一側性難聴児3例に対し, 日常生活上の聞き取りにくさに関する問診と雑音下の文聴取課題である HINT-J を実施し, 健聴児の結果と比較した。この結果, 一側性難聴児では雑音の方向に関わらず健聴児に比べて文聴取閾値の上昇がみられ, 特に健聴耳側 Noise 条件では3例中2例で SN 比 0dB 以上でなければ文の聴取が困難であった。次に, 対象児1例に, 増幅機能のない FM システムを貸与し, HINT-J 及び2種の質問紙を用いて装用効果について検討した。FM システムの利用により, HINT-J においては難聴耳側, 健聴耳側どちらの Noise 条件でも聴き取りの改善がみられ, 質問紙においても会話音の聴取に改善がみられた。しかしながら, 心理社会的側面の改善には長期的な支援が必要なこと, 経済的な側面や装用上の課題についても検討すべき必要性が示唆された。

The primary purpose of this study was to determine sentence perception ability in noise and the effectiveness of an FM system for unilateral hearing loss (UHL). Three school-aged children with UHL and six childrens with normal hearing (NH) participated in the study. All the subjects underwent the Japanese Hearing in Noise Test (HINT-J) and were asked about their hearing in everyday life. As a result, the HINT-J scores for the children with UHL were lower than those for the (childrens with NH) under any noise condition. In particular, 2 of the 3 children could not perceive sentences at a lower than 0dB SN ratio in the presence of noise relative to the normal hearing side. Furthermore, one subject underwent a trial hearing using an FM system, and the effectiveness of the FM system for UHL was investigated using the HINT-J, a self-assessment inventory of hearing. When the subject used the FM system, the subject's HINT-J scores increased under noise conditions on the hearing impaired and normal hearing sides. The scores of the self-assessment inventory also improved. Long-term support is important to improve psychosocial aspects, and we considered the welfare subsidy and the tasks required for the use of this system.

Journal

  • AUDIOLOGY JAPAN

    AUDIOLOGY JAPAN 57(2), 143-150, 2014

    Japan Audiological Society

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