72例传导性聋患者多频稳态诱发电位与纯音测听的相关性

目的 探讨多频稳态诱发电位,即听觉稳态反应(ASSR)与纯音听阈在传导性聋患者诊断中的相关性.方法 对72例传导性聋患者的72耳分别行ASSR和纯占测听测试,并进行ASSR与纯音听阈的相关性分析.结果 对于传导性聋的诊断,ASSR反应阈与纯音听阈的相关性分析显示,在不同刺激声信号载波频率情况下二者的相关性:0.5 kHz(r=0.634,P>0.05)、1 kHz(r=0.792,P<0.05)、2 kHz(r=0.814,P<0.05)、4 kHz(r=0.927,P<0.01).除低频(0.5 kHz)外,随着频率增高,二者相关性越高.不同程度气骨导差传导性聋患者中,ASSR反应阈与纯音听阈的相关性:气骨导差≤30dB HL组(r=0.723,P<0.05),气骨导差31～60 dB HL组(r=0.816,P<0.05).结论 ASSR与纯音听阈有相关性,ASSR对传导性聋诊断有临床应用价值.

Correlation between multi-frequency steady-state evoked potential and pure-tone audiometry in 72 patients with conductive hearing loss

Objective To explore the correlation between multi-frequency steady-state evoked potential, namely auditory steady state responses(ASSR) and pure-tone audiometry in diagnosis of conductive hearing loss. Methods Seventy-two ears of 72 patients with conductive hearing loss were tested by ASSR and pure-tone andiometry respectively, then the correlation between ASSR and pure-tone audiometry was analyzed. Results For the diagnosis of conductive heating loss, under the sound stimulations of different carrier frequency, the analysis of correlation between the thresholds of ASSR and pure-tone audiometry showed 0. 5 kHz(r=0. 634, P>0. 05), 1 kHz(r =0.792, P<0.05), 2 kHz(r =0. 814, P<0. 05), 4 kHz(r = 0. 927, P <0.01). Except 0. 5 kHz, the thresholds of ASSR were correlated to pure tone thresholds, and the correlationships increased with the increase of carrier frequency. The correlations between the thresholds of ASSR and pure-tone audiometry in patients with varying degrees of air-bone gap showed ≤30dB HL group(r =0. 723,P<0.05), 31-60 dB HL group (r=0. 816,P <0.05) . Conclusion ASSR is correlated to pure-tone audiometry, and it would be useful in diagnosis of conductive hearing loss.