Abstract
Pure tone audiometry as a screening method for hearing conservation programs has been well established for years. However, it takes a certain time, requires a good cooperation of the patient, and indicates only the damage already caused. Otoacoustic emissions and especially the distortion products have recently been discussed as an alternate method for screening examinations. In the context of this prevention program, some hundred subjects have been examined as usually pure tone audiometry and in addition by measuring the distortion product otoacoustic emissions. The evaluation has been done in the context with the hearing loss measured by pure tone audiometry, with the history of noise exposure, and with the reliability of the distortion product otoacoustic emissions. The present results show that there is no reliable association between neither distortion products and hearing loss measured by pure tone audiometry nor between the distortion products and the noise exposure history. The only association found was between important hearing loss measured by pure tone audiometry and absence of distortion products. So, it can be said that distortion product otoacoustic emissions are not a reliable method to be used as screening measurement in hearing conservation programs.
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