청성뇌간유발반응검사 자극강도에 따른 변조이음향방사 비교
Comparison of Distortion Product Otoacoustic Emissions (DPOAEs) following Stimulus Intensity of Auditory Brainstem Response (ABR) Test
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초록
The purpose of this study is to examine whether the auditory function of patients are subtlely influenced by loud sound used in auditory brain stem response (ABR) test using a distortion product otoacoustic emissions (DPOAEs). A total of 33 subjects who visited the ENT clinic with sudden idiopathic hearing loss disease or a suspected other peripheral vertigo disease (9 males and 24 females) were enrolled in this study. Fifty-seven ears with hearing threshold levels less than 15 dB HL were selected (0.25 ~ 8 kHz). The DPOAEs test was performed before and immediately after ABR test. We found no statistically significant changes in DPOAEs parameters before and immediately after ABR test. And also, DPOAEs implemented before and immediately after ABR test showed a higher correlation at all frequencies. This study showed that the intensity of sound stimulus of ABR test do not affect the subtle changes in auditory function. it is suggested that the exposure duration and intensity of the sound stimulus applied to ABR test of this study is insufficient to achieve a statistically significant result. Therefore, further study will be needed about other auditory evoked potential test, which use the continuous stimulus intensity of 90 dB nHL for identification of effect on auditory function.
Abstract
The purpose of this study is to examine whether the auditory function of patients are subtlely influenced by loud sound used in auditory brain stem response (ABR) test using a distortion product otoacoustic emissions (DPOAEs). A total of 33 subjects who visited the ENT clinic with sudden idiopathic hearing loss disease or a suspected other peripheral vertigo disease (9 males and 24 females) were enrolled in this study. Fifty-seven ears with hearing threshold levels less than 15 dB HL were selected (0.25 ~ 8 kHz). The DPOAEs test was performed before and immediately after ABR test. We found no statistically significant changes in DPOAEs parameters before and immediately after ABR test. And also, DPOAEs implemented before and immediately after ABR test showed a higher correlation at all frequencies. This study showed that the intensity of sound stimulus of ABR test do not affect the subtle changes in auditory function. it is suggested that the exposure duration and intensity of the sound stimulus applied to ABR test of this study is insufficient to achieve a statistically significant result. Therefore, further study will be needed about other auditory evoked potential test, which use the continuous stimulus intensity of 90 dB nHL for identification of effect on auditory function.
참고문헌 (15)
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