Increased prevalence of early cochlear damage in young patients with type 1 diabetes detected by distortion product otoacoustic emissions.

Objective: To evaluate the hearing of adolescents with diabetes mellitus type 1(DM1) by otoacoustic emissions (OAEs), and by comparing different tests with pure-tone audiometry to identify potential early cochlear impairments.

Design: Pure-tone audiometry, transient evoked otoacoustic emissions (TEOAEs), and distortion product otoacoustic emissions (DPOAEs) were performed in a group of adolescents with and without DM1. Clinical characteristics, disease duration, and glycated haemoglobin levels were studied.

Comparative study of audiometrics tests on metallurgical workers exposed to noise only as well as noise associated to the handling of chemical products.

Unlabelled: Exposure to ototoxic chemical products in the presence or absence of noise can cause irreversible injury to the hearing of workers for a significantly short period of exposure period.

Aim: to perform a comparative study, through audiometric tests, in workers exposed to noise only and noise associated with chemical products.

Materials And Methods: 155 steel workers (18 - 50 years) exposed to noise (group I), and exposed to noise and chemical products (group II) for a period that varies from 3 to 20 years.