| Autor: |
Barrs, David M., Althoff, Lisa K., Krueger, Wesley W. O., Olsson, James E. |
| Zdroj: |
Otolaryngology - Head and Neck Surgery; February 1994, Vol. 110 Issue: 2 p177-184, 8p |
| Abstrakt: |
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. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
Plný text