Distortion Product Otoacoustic Emissions in Acute Sensorineural Hearing Loss.

急性感音神经性听力损失中的畸变产物耳声发射。

• 批准号: 07671850
• 负责人: UEDA Hiromi
• 金额: $ 1.28万
• 依托单位: NAGOYA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07671850/
• 关键词: Acute sensorineural hearing loss; Sudden deafness; Distortion product otoacoustic emission; DPOAE

Time course of acute sensorineural hearing loss cases mainly on sudden deafness (SD) with horizontal type audiograms was evaluated by means of pure tone audiometry (PTA) and Distortion product otoacoustic emissions (DPOAEs) together with Evoked otoacoustic emissions (EOAEs).As the PTA levels recovered, DP power in each frequency also improved to almost the same level as that of the healthy side with good correlation in the full and remarkable recovery groups. 1kHz DP power exclusively had good correlation to 1kHz PTA level than in other frequencies through the time course.In 6 cases which could be evaluated every DP frequencies, correlation coefficient value at 1,2 and 4kHz was calculated as high as 0.856,0.731 and 0.613 respectively. The value tended to be high in lower frequency. The inner ear function could be evaluated in frequency domain in some extent. However, DP power fulctuated day to day resulting in difficulty of evaluating the inner ear function at that instance.On the other hand, total echo power (TEP) of EOAEs showed excellently high correlation coefficient value to mean PTA level (quadratic method) of 0.952.No case was observed in which DPOAE had improved prior to the PTA level. It is difficult to predict the prognosis only with the result of DPOAE at that instant.

本文应用纯音测听（PTA）、畸变产物耳声发射（DPOAEs）和诱发耳声发射（EOAEs）对以突发性聋（SD）为主的急性感音神经性聋（感音神经性聋）水平型听力图进行了时间进程分析。完全恢复组和显著恢复组各频率的DP功率也提高到与健侧几乎相同的水平，且相关性良好。1kHz DP功率与1kHz PTA水平在时间进程上的相关性最好，在6例可评价每种DP频率的病例中，1、2和4kHz的相关系数分别高达0.856、0.731和0.613。在较低的频率下，该值趋于高。频域法可以在一定程度上评价内耳功能。而EOAEs的总回声功率（TEP）与平均PTA水平（二次法）的相关系数为0.952，未见DPOAE先于PTA水平改善的病例。仅凭DPOAE的即刻结果难以预测预后。

项目成果

服部 琢: "DPOAEによる急性感音難聴の経過観察" Audiology Japan. 39.5. 541-542 (1996)

Taku Hattori：“DPOAE 引起的急性感音神经性听力损失的随访”日本听力学 39.5（1996）。

服部 琢: "DPOAEによる急性感音難聴の経過観察" Audiology Japan. 39. 541-542 (1996)

Taku Hattori：“DPOAE 引起的急性感音神经性听力损失的随访”日本听力学 39. 541-542 (1996)。

TAKU HATTORI: "Distortion Product Otoacoustic Emissions in Acute Sensorineural Hearing Loss." Vol.39No.5. 541-542 (1996)

TAKU HATTORI：“急性感音神经性听力损失中的失真产物耳声发射。”