경도 감각신경성 난청에서 일과성이음향방사와 청력역치

목차

I. 서론

II. 연구 방법
1. 연구 대상
2. 검사 방법 및 절차

III. 결과
1. 정상 청력군과 감각신경성 난청군의 순음 역치 및 TEOAEs
2. 순음 역치와 TEOAEs와의 상관관계
3. 협대역 주파수(2,4kHz)와 광대역 주파수에서 TEOAEs와 순음 역 치의 기준에 따른 민감도와 특이도

VI. 고찰

V. 요약 및 결론

참고문헌

본문내용

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Transient Evoked Otoacoustic Emissions
and Audiometric Thresholds in
Mild Sensorineural Hearing Loss
Hwang, Hyekyung
Department : Rehabilitation
Major : Audiology
Graduate School of Social Welfare, Hallym University
TEOAEs have been used as a tool for screening hearing loss.
TEOAEs can be analysed by several parameters, which include in overall frequencies response, reproducibility and SNR in each frequency band(1∼6kHz). The features of parameters help to evaluate the hearing loss more clearly. The frequency spectrum has a relationship with the pattern of audiogram, which enables to spot the mild hearing loss but it is impossible to find the thresholds of hearing per frequency.
The purpose of this study is to find whether there is a meaningful relationship between the parameters and mild hearing loss and to establish the standards of parameters with respect to the sensitivity and specificity.
The data were analyzed by the parameter including the response, SNR and reproducibility in overall frequencies, and the reproducibility and SNR in four narrow bands with the center frequencies of 1, 2, 3 and 4kHz. TEOAEs were measured for 30 normal ears and 50 ears with mild sensorineural hearing losses.
The results were as follows :
In case of mild sensorineural hearing loss, there was a significant correlation (P<0.001) between pure tone average thresholds and overall TEOAEs responses. Significant correlations were also found between each threshold of 1kHz∼4kHz and the corresponding reproducibility and SNR. Both the sensitivity and specificity were high when the SNR of 7dB and 50 or 70% of reproducibility were used as screening criteria and the threshold of 25dBHL as a diagnostic criteria. These results suggest that TEOAEs can be a valuable tool especially screening for a mild hearing loss.

키워드

감각신경성,   일과성이음향방사,   뇌간유발전위검사