正常儿童多频稳态诱发电位与纯音测听测试的相关性

目的:测定正常儿童多频稳态听觉诱发反应(multiple auditory steady-state responses,ASSR)阈值及纯音听阈,探讨两者的相关性。方法:对30例(60耳)正常5~10岁儿童分别行ASSR与纯音测听测试。结果:不同频率ASSR测试值均数与纯音听阈均数差值为11~16.50 dB HL;各频率ASSR测试值与纯音听阈均数间差异均有统计学意义(P<0.05),在0.25 kHz及0.5 kHz组差异尤为明显(P<0.01)。除0.25 kHz及0.5 kHz外,其他频率ASSR测试值与纯音听阈相关系数均有统计学意义(P<0.05),且随着测试频率的增加,两者的相关关系有增强趋势。结论:正常5~10岁儿童中、高频率ASSR测试值与纯音听阈有良好的相关性,可应用ASSR预测被检查者纯音听阈。

Correlation between the thresholds acquired with ASSR and pure tone audiometry

Objective: To determine the threshhold of multiple auditory steadystate responses(ASSR) and pure tone audiometry in children aged five to ten with normal hearing,and to explore the correlation between them.Methods: Thirty children with normal hearing had the ASSR and pure tone audiometry determined at 0.25,0.5,1,2,4 and 8 kHz.The coherence and correlation between the two groups were determined by the t test and the correlated modulus t test.Results: The different average threshholds of ASSR and pure tone audiometry at all tested frequencies ranged from 11 to 16.50 dBHL.There was a statistical difference between the result obtained by ASSR and pure tone audiometry at all tested frequencies(P<0.05),especially at 0.25kHz and 0.5kHz(P<0.01).The correlation was significant between the results by ASSR and pure tone audiometry at all tested frequencies(P<0.05) by using the correlated modulus t test,except for 0.25kHz and 0.5kHz(P>0.05).The correlation was obvious with an increase of frequency.Conclusion:Inthe middle or high frequencies,there are good correlations between ASSRand pure tone audiometry.However,there is a numerical value betweenthem.It is feasible to confer the pure tone hearingthreshhold of childrenagedfromfive toten by determiningthe threshhold of ASSRand by usingthe numerical value.