Pure-tone audiometry and auditory brainstem responses in noise-induced deafness

Noor Hassim Ismail, Kimitaka Kaga, Kousuke Nishimura

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Purpose: The objective of this study is to find the relationship between pure-tone audiometry results and the auditory brainstem response wave abnormalities. Subjects and Methods: The pure-tone audiometry (PTA) and auditory brainstem responses (ABRs) from 22 patients (44 ears) with diagnosed noise-induced permanent hearing loss were studied. Three indices of PTA were average thresholds of 0.5 kHz/,/1 kHz, and 2 kHz (PTA1); 2 kHz and 4 kHz (PTA2); and 4 kHz (PTA3) were subdivided into 3 thresholds of hearing. Their relationships with ABR results were analysed. The patterns of PTA from various groups of ABR wave patterns were studied. Results: In this study, the abnormal ABR wave patterns were detected in 72.7% of the ears. The ears with prolonged ABR wave latency, absent early waves, prolong interpeak wave I-V latency was 20.5%, 18.2%, and 21.1%, respectively. Normal ABRs were recorded in 27.3% of the ears despite marked thresholds elevation of the PTA at high frequencies. Other relationships between PTA results and ABR wave results were discussed. Conclusion: There were relationships between severity of noise-induced hearing loss indicated by PTA and the patterns of ABR wave abnormalities among workers with noise-induced permanent hearing loss.

Original languageEnglish
Pages (from-to)31-35
Number of pages5
JournalAmerican Journal of Otolaryngology - Head and Neck Medicine and Surgery
Volume17
Issue number1
DOIs
Publication statusPublished - 1996

Fingerprint

Pure-Tone Audiometry
Brain Stem Auditory Evoked Potentials
Deafness
Noise
Noise-Induced Hearing Loss
Ear
Hearing
Reaction Time

ASJC Scopus subject areas

  • Otorhinolaryngology

Cite this

Pure-tone audiometry and auditory brainstem responses in noise-induced deafness. / Ismail, Noor Hassim; Kaga, Kimitaka; Nishimura, Kousuke.

In: American Journal of Otolaryngology - Head and Neck Medicine and Surgery, Vol. 17, No. 1, 1996, p. 31-35.

Research output: Contribution to journalArticle

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