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A new bone conduction hearing aid to predict hearing outcome with an active implanted device

  • Otology
  • Published:
European Archives of Oto-Rhino-Laryngology Aims and scope Submit manuscript

Abstract

Purpose

We compared our historical medium-term data obtained with an active semi-implanted bone conduction device and the hearing results of a new passive bone conduction hearing device to determine its predictive value for the hearing results with the semi-implanted device.

Methods

The study sample was 15 patients with an active bone conduction implant (mean follow-up 26 months). Pure tone audiometry was performed with headphones, sound field speech audiometry was conducted unaided, and free-field speech audiometry was carried out with both the active bone conduction system and the passive device switched off.

Results

As compared with the unaided condition, speech reception was significantly improved with both devices. Comparison of speech reception threshold at 100% of word recognition showed no difference between the active and the passive device. At lower intensity the difference in speech perception was significant in the patients with monaural fitting (group A) and was non-statistically significant in those with binaural fitting (group B); the speech reception threshold at 50% of word recognition was 26.00 dB (± 10.22) with the active implant and 30.50 dB (± 7.98) with the passive device in group A (p = 0.047) and 24.00 dB (± 5.48) and 29.00 dB (± 2.24) in group B (p = 0.052), respectively.

Conclusions

The hearing outcome after active bone conduction implant was comparable to published data. Compared with the unaided condition, speech recognition was significantly improved with the passive device. The device may also provide value to predict the hearing outcome with the implanted device, especially at higher intensities.

Level of evidence

IV.

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Funding

The authors certify that they have no affiliations with or involvement in any organization or entity with any financial or non-financial interest in the subject matter or materials discussed in this manuscript.

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Authors and Affiliations

  1. Otolaryngology Division, Department of Surgical Sciences, University of Turin, Via Genova 3, 10126, Turin, Italy

    Andrea Canale, Valeria Boggio, Mattia Ravera, Federico Caranzano, Michelangelo Lacilla & Roberto Albera

  2. Department of Otolaryngology, San Giuseppe Hospital, University of Milan, Milan, Italy

    Andrea Albera

Authors
  1. Andrea Canale
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  2. Valeria Boggio
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  3. Andrea Albera
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  4. Mattia Ravera
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  5. Federico Caranzano
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  6. Michelangelo Lacilla
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  7. Roberto Albera
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Correspondence to Andrea Canale.

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Canale, A., Boggio, V., Albera, A. et al. A new bone conduction hearing aid to predict hearing outcome with an active implanted device. Eur Arch Otorhinolaryngol 276, 2165–2170 (2019). https://doi.org/10.1007/s00405-019-05450-4

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  • DOI: https://doi.org/10.1007/s00405-019-05450-4

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