Transcranial Attenuation in Patients with Single-Sided Deafness

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Transcranial attenuation (TA) of bone-conducted sound has a high degree of variability by frequency and subject, which may play a role in the objective benefit of individuals with single-sided deafness (SSD) treated with a bone-anchored implant (BAI). This study sought to determine whether TA is predictive of benefit in individuals with SSD who receive a BAI. Adult, English-speaking patients with unilateral profound sensorineural hearing loss who underwent a BAI evaluation were included for study. Absolute TA values were consistent with previously published reports. Regression analysis indicated no correlation between TA values and aided speech-in-noise performance for any combined or individual frequencies. Measures of TA do not provide predictive value in determining behavioral outcomes in the SSD population. Specifically, low TA does not suggest improved outcomes with a BAI.

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