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Bilateral bone-anchored hearing aids (BAHAs): An audiometric evaluation
Göteborg University.
Linköping University. Linköping University, Department of Clinical and Experimental Medicine, Technical Audiology .ORCID iD: 0000-0003-3350-8997
Göteborg University.
Göteborg University.
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2004 (English)In: The Laryngoscope, ISSN 0023-852X, E-ISSN 1531-4995, Vol. 114, no 1, 77-84 p.Article in journal (Refereed) Published
Abstract [en]

Objectives: Since the technique to implant bone-anchored hearing aids (BAHAs) with the use of osseointegrated implants was developed in 1977, more than 15,000 patients have been fitted with BAHAs worldwide. Although the majority have bilateral hearing loss, they are primarily fitted unilaterally. The main objective of this study was to reveal benefits and drawbacks of bilateral fitting of BAHAs in patients with symmetric or slight asymmetric bone-conduction thresholds. The possible effects were divided into three categories: hearing thresholds, directional hearing, and binaural hearing. Study Design: Prospective study of 12 patients with bilateral BAHAs. Methods: Baseline audiometry, directional hearing, speech reception thresholds in quiet and in noise, and binaural masking level difference were tested when BAHAs were fitted unilaterally and bilaterally. Results: Eleven of the 12 patients used bilateral BAHAs on a daily basis. Tests performed in the study show a significant improvement in sound localization with bilateral BAHAs; the results with unilateral fitting were close to the chance level. Furthermore, with bilateral application, the improvement of the speech reception threshold in quiet was 5.4 dB. An improvement with bilateral fitting was also found for speech reception in noise. Conclusions: Overall, the results with bilateral fitted BAHAs were better than with unilaterally fitted BA-HA; the benefit is not only caused simply by bilateral stimulation but also, to some extent, by binaural hearing. Bilateral BAHAs should be considered for patients with bilateral hearing loss otherwise suitable for BAHAs.

Place, publisher, year, edition, pages
Laryngoscope , 2004. Vol. 114, no 1, 77-84 p.
Keyword [en]
Bilateral BAHAs;bilateral hearing loss;hearing rehabilitation;BAHA
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-59780DOI: 10.1097/00005537-200401000-00013ISI: 225916200012OAI: oai:DiVA.org:liu-59780DiVA: diva2:353371
Available from: 2010-09-26 Created: 2010-09-24 Last updated: 2017-12-12

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Stenfelt, Stefan

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