Behavior of 8000 Hz audiometric threshold in chronic acoustic trauma

The paper analyzes the 8 KHz threshold in subjects with noise-induced hearing loss. The study group consisted of 315 subjects occupationally exposed to noise and suffering from acoustic trauma, which was considered as a mean threshold of more than 25 dB at 2, 3 and 4 KHz. The mean shape of audiogram...

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Bibliographic Details
Published inMedicina del lavoro Vol. 85; no. 4; p. 314
Main Authors Albera, R, Milan, F, Ferreri, A, Beatrice, F, Bosia, S, Romano, C
Format Journal Article
LanguageItalian
Published Italy 01.07.1994
Subjects
Adolescent
Adult
Age Factors
Audiometry
Auditory Threshold
Hearing Loss, Noise-Induced - diagnosis
Hearing Loss, Noise-Induced - etiology
Humans
Middle Aged
Noise, Occupational - adverse effects
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Summary:The paper analyzes the 8 KHz threshold in subjects with noise-induced hearing loss. The study group consisted of 315 subjects occupationally exposed to noise and suffering from acoustic trauma, which was considered as a mean threshold of more than 25 dB at 2, 3 and 4 KHz. The mean shape of audiograms was characterized by a neurosensory deficit which was more elevated at 4 and 6 KHz whereas the threshold at 8 KHz was better. However, this pattern was found in 60% of the cases whereas in the remaining 40% the threshold at 8 KHz was worse. Subjects with the most impaired audiometric threshold at 8 KHz were mainly older, although cases were found in a low percentage of younger subjects. The results demonstrate that in individual cases it is impossible, on the basis of the shape of the audiogram, to establish whether a hearing loss is due to noise or age.
ISSN:0025-7818