Subscribe to RSS
Objective measurement for early diagnosis of noise induced hearing impairment using high frequency DPOAE up to 16 kHz
18 April 2018 (online)
In our society hearing is exposed to occupational noise and leisure noise with all potential consequences. During the last 20 decades we observe a growing number of young adults suffering from irreversibel hearing loss without a (year-) long exposure of noise. Current obective audiometric procedures usually measure frequencies as far as 8 kHz. We present a novel objective technique to enabel early diagnosis of noise induced hearing impairment.
Two study groups (25 subjects without noise exposure and 23 with a positive medical history of noise exposure) were included. All participants demostrated normal tone audiogramms and positive TEOAE. In both groups a measurement of DPOAE (up to 16 kHz) and high frequency pure tone audiometry (up to 16 kHz) was added.
Comparing both study groups high frequency DPOAE measurement revealed significant (above 6 kHz) and highly significant (above 14 kHz) results. Between 10 and 16 kHz results from high tone audiometry and high frequency DPOAE correlated significantly in noise exposed subjects.
Objective measurement of DPOAE ranging as far as 16 kHz promises to detect a potential sensorineural hearing loss in young adults when conventional audiometry does not indicate impairment.