Multicenter Clinical Study of Bone-anchored Hearing Aids in Japan-Application for Congenital Auricular Atresia-

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  • 先天性外耳道閉鎖症例における埋め込み型骨導補聴器(Bone‐Anchored Hearing Aid:BAHA)の有効性に関する検討
  • 先天性外耳道閉鎖症例における埋め込み型骨導補聴器(Bone-Anchored Hearing Aid:BAHA)の有効性に関する検討
  • センテンセイ ガイジドウ ヘイサ ショウレイ ニ オケル ウメ コミ ガタ コツドウ ホチョウキ Bone Anchored Hearing Aid BAHA ノ ユウコウセイ ニ カンスル ケントウ

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Abstract

The effectiveness of bone anchored hearing aid (BAHA) for the patients with congenital aural atresia was evaluated by multicenter clinical study in Japan. Twenty patients (17 bilateral and 3 hemilateral) of congenital auricular atresia were registered for this study and finally, 18 of them (15 bilateral and 3 unilateral) were subjected to further evaluation. Primary endpoint of this study was free sound-field pure-tone audiometory and speech threshold hearing test in quiet and noisy circumstances. Secondary endpoint of this study was patient's satisfaction based upon APHAB (Abbreviated Profile of Hearing Aid Benefit) questionnaire survey. These results were compared between before and 12 weeks after BAHA surgery. Both hearing level of pure tone and speech threshold significantly improved after BAHA surgery. APHAB scores also suggested the improvement of the QOL after BAHA usage, except for the scores that concerned with unpleasantness of noisy sound. BAHA is one of the useful options for the treatment of congenital auricular atresia.

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