Does the bone-anchored hearing aid have a complementary effect on audiological and subjective outcomes in patients with unilateral conductive hearing loss?
SourceAudiology and Neuro-Otology, 10, 3, (2005), pp. 159-168
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Audiology and Neuro-Otology
SubjectDCN 1: Perception and Action; DCN 2: Functional Neurogenomics; UMCN 3.3: Neurosensory disorders
OBJECTIVES: To study the effect of a bone-anchored hearing aid (BAHA) in patients with unilateral conductive hearing loss. STUDY DESIGN: Prospective evaluation on 18 subjects. METHODS: Aided and unaided binaural hearing was assessed in the sound field using a sound localization test and a speech recognition in noise test with spatially separated sound and noise sources. The patients also filled out a disability-specific questionnaire. PATIENTS: 13 out of the 18 subjects had normal hearing on one side and acquired conductive hearing loss in the other ear. The remaining 5 patients had a unilateral air-bone gap and mild symmetrical sensorineural hearing loss. RESULTS: Sound localization with the BAHA improved significantly. Speech recognition in noise with spatially separated speech and noise sources also improved with the BAHA. Fitting a BAHA to patients with unilateral conductive hearing loss had a complementary effect on hearing. Questionnaire results showed that the BAHA was of obvious benefit in daily life. CONCLUSIONS: The BAHA proved to be a beneficial means to optimize binaural hearing in patients with severe (40-60 dB) unilateral conductive hearing loss according to audiometric data and patient outcome measures.
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