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Minerva Medicolegale 1999 September;119(3): 133-40

Copyright © 1999 EDIZIONI MINERVA MEDICA

language: Italian

Permanent work-induced hearing loss. Proposed method to determine its onset and aggravation

Albera R., Beatrice F.


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In this paper the authors propose a methodology that makes it possible to define the diagnosis of noise induced hearing loss in relation to the need to inform the public health service about all possible cases of significant hearing loss due to work. It is the author's opinion that hearing loss could be appreciated by the subject if the mean threshold is superior to 25 dB at 0.5-1-2-3-4 kHz. At the same time the professional origin of hearing loss must be verified. The audiogram must therefore demonstrate a bilateral, sensorineural hearing loss at higher frequencies, superior to values expected in relation to age. The evolution of noise induced hearing loss should be evaluated on the basis of a mean threshold at 2-3-4 kHz and must be compatible with the exposure to noise level and to the well-known temporal evolution of acoustic trauma.

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