Work-Related, Noise-Induced Hearing Loss: Evaluation Including Evoked Potential Audiometry

Author:

Barrs David M.1,Althoff Lisa K.2,Krueger Wesley W. O.3,Olsson James E.3

Affiliation:

1. Colorado Springs

2. Department of Audiology, Santa Rosa Medical Center, San Antonio

3. San Antonio

Abstract

This article reviews the evaluation of 246 workers (492 ears) who underwent otologic and audiologic testing as part of a worker's compensation claim for work-related, noise-induced hearing loss. Tinnitus was present in 58% of the patients, but was rarely a major symptom. Other otologic symptoms or a history of ear disease were virtually nonexistent. Standard audiometry showed a downsloping, high-frequency sensorineural hearing loss in 85% of the ears tested, with only 37% having a characteristic “noise notch” at 4000 or 6000 hertz. Asymmetric hearing loss was not uncommon, with 48 patients (20%) undergoing magnetic resonance scanning, all of whom showed no central lesion responsible for the loss. Proven malingering was surprisingly uncommon (9%). In this study, evoked response audiometry was a valuable adjunct to confirm behavioral thresholds in the evaluation of possible work-related, noise-induced hearing loss. The middle latency response was more effective than the auditory brainstem response as a result of the high-frequency steepness of the audiometric curve.

Publisher

SAGE Publications

Subject

Otorhinolaryngology,Surgery

Reference20 articles.

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