Format

Send to

Choose Destination
Int J Audiol. 2016 Nov;55(11):653-7. doi: 10.1080/14992027.2016.1193234. Epub 2016 Jun 27.

Amplification of transcutaneous and percutaneous bone-conduction devices with a test-band in an induced model of conductive hearing loss.

Author information

1
a Department of Otolaryngology , Asan Medical Center, University of Ulsan, College of Medicine , Seoul , Korea and.
2
b Department of Otolaryngology , Kyungpook National University, College of Medicine , Daegu , Korea.

Abstract

OBJECTIVE:

Transcutaneous devices have a disadvantage, the dampening effect by soft tissue between the bone and devices. We investigated hearing outcomes with percutaneous and transcutaneous devices using test-bands in an induced unilateral conductive hearing loss.

DESIGN:

Comparison of hearing outcomes of two devices in the same individuals.

STUDY SAMPLE:

The right ear was plugged in 30 subjects and a test-band with devices (Cochlear™ Baha® BP110 Power and Sophono® Alpha-2 MPO™) was applied on the right mastoid tip with the left ear masked. Sound-field thresholds, speech recognition thresholds (SRTs), and word recognition scores (WRSs) were compared.

RESULTS:

Aided thresholds of Sophono were significantly better than those of Baha at most frequencies. Sophono WRSs (86 ± 12%) at 40 dB SPL and SRTs (14 ± 5 dB HL) were significantly better than those (73 ± 24% and 23 ± 8 dB HL) of Baha. However, Sophono WRSs (98 ± 3%) at 60 dB SPL did not differ from Baha WRSs (95 ± 12%).

CONCLUSION:

Amplifications of the current transcutaneous device were not inferior to those of percutaneous devices with a test-band in subjects with normal bone-conduction thresholds. Since the percutaneous devices can increase the gain when fixed to the skull by eliminating the dampening effect, both devices are expected to provide sufficient hearing amplification.

KEYWORDS:

Bone-conduction; conductive; hearing aids; hearing loss; hearing rehabilitation

PMID:
27347717
DOI:
10.1080/14992027.2016.1193234
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Taylor & Francis
Loading ...
Support Center