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目的探讨多频稳态听觉诱发电位对感音神经性聋儿童的听力评估的临床意义。方法采用美国GSI-Audera测试系统,应用单频刺激的方式,对感音神经性聋45例(90耳)行多频稳态听觉诱发电位(ASSR)检测和纯音听阈测试(PTA),比较两者测试阈值,分析不同频率处听力阈值分布情况及其相关性。结果不同频率ASSR阈值均数与纯音听力均数差值为2～7.5dBHL;各频率ASSR测试值与相应频率纯音听阈间差异均有统计学意义(t检验P<0.05),各频率ASSR测试值与相应频率纯音听力均有相关性(P<0.05),且随着测试频率的递增,两者的相关系数有增高的趋势。结论多频稳态听觉诱发电位可对感音神经性聋儿童的听力进行评估,为低龄儿童及难以检测行为听力的患儿验配助听器提供依据。
Objective To investigate the clinical significance of multi-frequency steady state auditory evoked potentials in hearing evaluation of sensorineural deaf children. Methods Using the GSI-Audera test system in the United States, the multi-frequency steady state auditory evoked potential (ASSR) and pure tone hearing threshold (PTA) were measured in 45 cases (90 ears) of sensory nerve deafness by single frequency stimulation. Who test the threshold, analyze the hearing threshold distribution and its correlation at different frequencies. Results The difference between ASSR thresholds and pure tone hearing averages was 2 ~ 7.5 dBHL at different frequencies. There was significant difference between ASSR test results and pure tone auditory thresholds (t test, P <0.05), ASSR test values (P <0.05), and with the increasing of test frequency, the correlation coefficient between the two had an increasing trend. Conclusions Multi-frequency steady-state auditory evoked potentials can evaluate the hearing ability of children with sensorineural hearing loss and provide the basis for fitting hearing aids to children younger and more difficult to detect behavioral hearing.