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KMID : 0361020230660120798
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Korean Journal of Otolaryngology - Head and Neck Surgery
2023 Volume.66 No. 12 p.798 ~ p.804
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Comparison of Loudness Discomfort Level by the Testing Method in Adults With Normal Hearing and in Patients With Sensorineural Hearing Loss
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Jang Dong-Hyuk
Choi Jung-Ho
Jeon Seung-Yeon
Kim Kyung-Mi
Kim Dong-Hyun
Han Sol
Park Ji-Hye
Park Ka-Young
Choi Hyo-Jung
Shim Hyun-Joon
An Yong-Hwi
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Abstract
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Background and Objectives There are several variations in the technique for measuringloudness discomfort levels (LDL). The aim of this study was to evaluate LDL by measuringpure tone and narrow-band noise (NBN) in adults with normal hearing and in patients withsensorineural hearing loss, and to analyze the correlation of LDL at different frequencies.
Subjects and Method Normal listeners (n=41) with the pure tone average of 12 dB HL andpatients with hearing loss (n=42) with the pure tone average of 52 dB HL were studied from2021 to 2022. Pure tone audiometry and LDL test by pure tone and NBN were performed twicein all participants at 250, 500, 1 k, 2 k, 3 k, 4 k, and 8 kHz.
Results The LDL test showed some inter-subject variability with the mean being 107.0±9.4d B, 106.0±11.6 dB by pure tone, and 100.1±6.8 dB, 100.4±6.7 dB by NBN (right and left ear,respectively) in the normal hearing group. There were no significant differences between LDLaverage by pure tone or NBN between two groups. Two serial tests showed high test-retest re-liability. There was no difference in LDL between the two groups at each frequency, exceptfor LDL by pure tone at 8 kHz in the left ear. High correlation of LDL was observed betweendifferent frequencies, except between 8 kHz and the other frequencies.
Conclusion LDL by pure tone and NBN were consistent with or without hearing loss. Highcorrelation of LDL between different frequencies were shown except at 8 kHz. It might be suf-ficient to measure LDL once by pure tone only, including 8 kHz.
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KEYWORD
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Hearing, Loudness perception, Pure-tone audiometry
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