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Transcranial Attenuation in Patients with Single-Sided Deafness
Hillary A Snapp1, Kari E Morgenstein, Fred F Telischi
1Department of Otolaryngology, University of Miami Ear Institute, University of Miami Miller School of Medicine, Miami, Fla., USA.
Audiology & Neuro-Otology
|August 17, 2016
Summary
Transcranial attenuation (TA) of bone-conducted sound does not predict outcomes for individuals with single-sided deafness (SSD) receiving a bone-anchored implant (BAI). This study found no correlation between TA values and aided speech performance in the SSD population.
Area of Science:
- Audiology
- Neuroscience
- Biomedical Engineering
Background:
- Bone-anchored implants (BAI) are used to treat single-sided deafness (SSD).
- Transcranial attenuation (TA) of bone-conducted sound varies significantly between individuals and frequencies.
- The predictive value of TA for BAI treatment outcomes in SSD is not well understood.
Purpose of the Study:
- To investigate whether transcranial attenuation (TA) can predict objective benefit in individuals with single-sided deafness (SSD) treated with a bone-anchored implant (BAI).
Main Methods:
- Adult patients with unilateral profound sensorineural hearing loss undergoing BAI evaluation were included.
- Absolute transcranial attenuation (TA) values were measured.
- Regression analysis was used to correlate TA values with aided speech-in-noise performance.
Main Results:
- Absolute TA values were consistent with previously published data.
- No correlation was found between TA values and aided speech-in-noise performance across all tested frequencies.
- TA measures did not demonstrate predictive value for behavioral outcomes in the SSD population.
Conclusions:
- Transcranial attenuation (TA) is not a reliable predictor of treatment benefit for individuals with single-sided deafness (SSD) receiving a bone-anchored implant (BAI).
- Low TA does not indicate improved outcomes with BAI treatment in SSD patients.
