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Eur Arch Otorhinolaryngol. 2017 Aug;274(8):3011-3019. doi: 10.1007/s00405-017-4614-8. Epub 2017 May 22.

A multicenter study on objective and subjective benefits with a transcutaneous bone-anchored hearing aid device: first Nordic results.

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Department of Otolaryngology, Head and Neck Surgery and Audiology, Aalborg University Hospital, Hobrovej 18-22, 9000, Aalborg, Denmark.
Unit of Clinical Biostatistics and Bioinformatics, Aalborg University Hospital, Aalborg, Denmark.
Department of Audiology, Copenhagen University Hospital, Rigshospitalet, Denmark.
Department of Otolaryngology, Head and Neck Surgery, Copenhagen University Hospital, Rigshospitalet, Denmark.


Examination of objective as well as subjective outcomes with a new transcutaneous bone-anchored hearing aid device. The study was designed as a prospective multicenter consecutive case-series study involving tertiary referral centers at two Danish University Hospitals. A total of 23 patients were implanted. Three were lost to follow-up. Patients had single-sided deafness, conductive or mixed hearing loss.


Rehabilitative. Aided and unaided sound field hearing was evaluated objectively using (1) pure warble tone thresholds, (2) pure-tone average (PTA4), (3) speech discrimination score (SDS) in quiet, and (4) speech reception threshold 50% at 70 dB SPL noise level (SRT50%). Subjective benefit was evaluated by three validated questionnaires: (1) the IOI-HA, (2) the SSQ-12, and (3) a questionnaire evaluating both the frequency and the duration of hearing aid usage. The mean aided PTA4 was lowered by 14.7 dB. SDS was increased by 37.5% at 50 dB SPL, SRT50% in noise improved 1.4 dB. Aided thresholds improved insignificantly at frequencies above 2 kHz. 52.9% of the patients used their device every day, and 76.5% used the device at least 5 days a week. Mean IOI-HA score was 3.4, corresponding to a good benefit. In SSQ-12, "quality of hearing" scored especially high. Patients with a conductive and/or mixed hearing loss benefitted the most. This device demonstrates a significant subjective hearing benefit 8 month post surgery. In patients with conductive and/or mixed hearing losses, patient satisfaction and frequency of use were high. Objective gain measures showed less promising results especially in patients with single-sided deafness (SSD) compared to other bone conduction devices.


BAHA attract; Bone conduction; Bone-anchored hearing aid; Bone-anchored hearing device; Hearing loss; Transcutaneous

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