Bone-anchored Hearing Aids in Unilateral Inner Ear Deafness

In nine patients with unilateral deafness and normal hearing in the contralateral ear, measurements of sound localization and speech perception were obtained before intervention, with a conventional contralateral routing of sound (CROS) hearing aid and later with a bone-anchored hearing aid (BAHA) implanted in the deaf ear. Sound localization did not show any differences between the three conditions. Speech perception using short, everyday sentences showed a reduction in the head-shadow effect of 2 dB for both the conventional CROS hearing aid and the BAHA in comparison to the unaided condition. Patients' real-life experiences of the three conditions were evaluated using the Abbreviated Profile of Hearing Aid Benefit (APHAB) questionnaire. The results showed a significant benefit with the BAHA in situations involving background noise and reverberation and a reduced aversion to loud sounds in comparison to the unaided and conventional CROS conditions.

[1]  E. Harford,et al.  A REHABILITATIVE APPROACH TO THE PROBLEM OF UNILATERAL HEARING IMPAIRMENT: THE CONTRALATERAL ROUTING OF SIGNALS CROS. , 1965, The Journal of speech and hearing disorders.

[2]  A. M. Mimpen,et al.  Improving the reliability of testing the speech reception threshold for sentences. , 1979, Audiology : official organ of the International Society of Audiology.

[3]  A Tjellström,et al.  Osseointegrated titanium implants in the temporal bone. A clinical study on bone-anchored hearing aids. , 1981, The American journal of otology.

[4]  K. Dormer,et al.  Experiences with Implantable Hearing Devices and a Presentation of a New Device , 1986, The Annals of otology, rhinology, and laryngology.

[5]  S. Bellman,et al.  Clinical applications of transcranial bone conduction attenuation in children , 1994, The Journal of Laryngology & Otology.

[6]  Restoration of Binaural Hearing with the Audiant Implant following Acoustic Neuroma Surgery , 1994, Ear, nose, & throat journal.

[7]  M. Valente.  Fitting Options For Unilateral Hearing Loss , 1995 .

[8]  J. Goebel,et al.  Wireless CROS Versus Transcranial CROS for Unilateral Hearing Loss , 1995 .

[9]  Robyn M. Cox,et al.  The Abbreviated Profile of Hearing Aid Benefit , 1995, Ear and hearing.

[10]  A. Bosman,et al.  Audiometric Evaluation of Bilaterally Fitted Bone-anchored Hearing Aids: Evaluatión audíométrica de auxiliares auditivos tipo vibrador óseo bilateral , 2001, Audiology : official organ of the International Society of Audiology.