正常成人短纯音ABR反应阈与纯音听阈的相关性研究

目的 探讨正常成人短纯音ABR反应阈(tone burst ABR,tb-ABR)与纯音听阈的相关性.方法对34例(68耳)正常成人分别进行0.5、1.0、2.0、4.0 kHz纯音听阈和tb-ABR测试,分析其tb-ABR反应阈与纯音听阈的相关性.结果68耳0.5、1.0、2.0、4.0 kHz tb-ABR反应阈分别为:27.43±3.29、25.98±2.76、16.78±2.37、12.42±2.64 dB n H L,纯音平均听阈分别为12.23±3.99、11.82±2.56、9.58±3.23、9.92±2.59 dB H L;tb-ABR反应阈与纯音听阈在0.5、1.0、2.0、4.0 kHz的差值分别为12.13±4.51、11.43±3.66、7.61±2.43、7.17±1.32 dB;两者的Pearson相关系数分别为0.69、0.79、0.84、0.89.结论tb-ABR反应阈与纯音听阈有相关性,tb-ABR具有频率特异性,能更好地反映各频率听力,可用于儿童听力评估.

The Relationships of Tone Burst -ABR Thresholds and the Pure-Tone Audiograms in Normal Hearing Adults

Objective To investigate the relationships of tone burst -ABR Thresholds and the pure -tone audiograms in normal hearing adults .Methods The response thresholds of Tone burst -ABR and the pure -tone audiogram were recorded from 34 adult(68 ears) at 0 .5 ,1 .0 ,2 .0 ,and 4 .0 kHz .The results were statistically ana-lyzed .The correlation of the response thresholds of tone burst -ABR and the pure-tone audiogram were studied . Results At 0 .5 ,1 .0 ,2 .0 ,4 .0 kHz ,the averages of the response thresholds of tone burst -ABR were 27 .43 ± 3 .29 ,25 .98 ± 2 .76 ,16 .78 ± 2 .37 ,and 12 .42 ± 2 .64 dB nHL ,respectively .The averages of the pure -tone audio-gram were 12 .23 ± 3 .99 ,11 .82 ± 2 .56 ,9 .58 ± 3 .23 ,and 9 .92 ± 2 .59 dB nHL ,respectively .The differences between the response thresholds of tone burst -ABR and the pure-tone audiogram were 12 .13 ± 4 .51 ,11 .43 ± 3 .66 ,7 .61 ± 2 .43 ,and 7 .17 ± 1 .32 dB ,respectively .At 0 .5 ,1 .0 ,2 .0 ,and 4 .0 kHz ,Pearson correlation coefficients were 0 .69 ,0 .79 ,0 .84 ,0 .89 ,respectively .Conclusion The tone burst -ABR and the pure -tone audiogram thresholds were a highly correlated with each other ,especially at 2 .0 kHz and 4 .0 kHz .Tone burst -ABR has the frequency specificity ,which can response the hearing level better .