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Year: 2013  Vol. 17   Num. Suppl. 1  - Print:
HEARING PROFILE ANALYSIS AMONG A POPULATION OF UNDERGRADUATE MUSIC STUDENTS BASED ON CONVENTIONAL AUDIOMETRY AND OTOACOUSTIC EMISSIONS
Author(s):
Débora Luders, Claudia Giglio de Oliveira Gonçalves
Abstract:

OBJECTIVE: To analyze the auditory profiles of undergraduate music students for comparison to a control group. CASE REPORT: The study participants were 42 undergraduate music students (38.10% female, 61.9% male) with anaverage age of 26 years. The students underwent conventional pure-tone audiometry (PTA) performed using a Madsen Itera II audiometer and TDH39P headphones, as well as transient evoked otoacoustic emissions (TEOAE) and distortion product (DPOAE) testing, which was performed using a Madsen model Capela (GN Otometrics) analyzer. The results showed that 39 students (92.85%) had hearing thresholds within normal limits, with lower thresholds in the left ear for all frequencies, except 4000 Hz. When compared to the control group, the study population had worse average hearing thresholds at frequencies of 500 Hz for the left ear, 250 Hz for the right ear, and 6000 Hz in both ears. We noted the absence of distortion product otoacoustic emissions (DPOAEs) in 11 students (26.2%), at one or more frequencies, typically in the left ear. Average DPOAE amplitude and signal/noise ratio were also worse in the left ear, except for those associated with stimuli of 8000 Hz. Compared to the control group, the study group exhibited reduced mean DPOAE amplitudes at all frequencies, except at 4000 Hz in the right ear. CONCLUSION: The differences in hearing thresholds, if followed for a longer period of time, can be analyzed together with the amplitude otoacoustic emissions to provide information on changes in the hearing status of musicians over time. This approach will facilitate theearly detection of hearing impairment.

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