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Related Experiment Videos

[Bone anchored hearing aids (B.A.H.A.)].

J Schüpbach1, M Kompis, R Häusler

  • 1Klinik für Hals-, Nasen- und Ohrenkrankheiten, Hals- und Kopfchirurgie, Inselspital, Universität Bern, Bern. jonas.schuepbach@insel.ch

Therapeutische Umschau. Revue Therapeutique
|March 5, 2004
PubMed
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Semi-implantable bone conduction hearing aids, known as Bone Anchored Hearing Aids (B.A.H.A.), offer an effective solution for hearing loss. Over 90% of patients report satisfaction with these devices, which have a low complication rate.

Area of Science:

  • Otolaryngology
  • Biomedical Engineering
  • Neurosurgery

Background:

  • Bone Anchored Hearing Aids (B.A.H.A.) utilize a semi-implantable device with an external vibrator connected to a titanium screw in the mastoid bone.
  • Sound is transmitted directly to the cochlea via bone conduction, bypassing the external and middle ear.
  • Primary indications include surgically uncorrectable conductive hearing loss, such as from atresia, malformations, chronic infections, or post-mastoidectomy impairment.

Purpose of the Study:

  • To evaluate the efficacy and safety of semi-implantable bone conduction hearing aids (B.A.H.A.).
  • To assess patient satisfaction and complication rates associated with B.A.H.A. implantation.
  • To explore novel applications, including unilateral deafness and bilateral implantation for binaural hearing.

Main Methods:

Related Experiment Videos

  • Retrospective analysis of 112 B.A.H.A. implantations over 13 years in patients aged 2-82.
  • Surgical procedures performed under local or general anesthesia as outpatient or inpatient cases.
  • Assessment of intra-operative and long-term post-operative complications, including implant rejection and skin reactions.

Main Results:

  • Operations were simple with no intra-operative complications.
  • Low incidence of long-term complications, with isolated skin reactions or infections.
  • 7% of cases required reimplantation due to rejection or loosening; over 90% patient satisfaction reported.

Conclusions:

  • Semi-implantable B.A.H.A. are a safe and effective treatment for specific types of hearing loss.
  • The devices offer significant benefits, including improved hearing and sound localization, with high patient satisfaction.
  • B.A.H.A. represent an advancement over conventional bone conduction aids, with expanding applications in audiology.