多频稳态诱发电位评估中度感音神经性聋儿童的应用

目的探讨多频稳态听觉诱发电位评估儿童中度感音神经性聋的可靠性。方法所有患者经纯音测听（PTA）检查筛选出中度感音神经性聋30例5～6岁儿童（共40耳），然后口服10％水合氯醛镇静睡眠后，行多频稳态听觉诱发电位（ASSR）检测，其阈值与纯音听阂阈值进行比较，分析不同频率处听力阈值分布情况及其相关性。结果分别比较语言频率ASSR阂值与纯音听闽阈值，结果显示，0．5kHz处相关性较差，其差值为2-18dB，而在4kHz处相关性最好。结论可以应用多频稳态听觉诱发电位评估中度感音神经性聋儿童的听力阈值，但需要注意0．5kHz处的相关性差异。

Auditory steady-state responses for the estimation of moderate sensorineural hearing loss among children

Objective To investigate the feasibility of auditory steady-state responses （ASSR） for the estimation of moderate degree of sensofineural hearing loss among children based on a clinical trial. Methods Included in this study were 30 children cases （40 ears） with moderate sensorineural hearing loss, who were enrolled in this study screened from 5 - 6 years old children in population by pure tone audiometry, assayed by ASSR following 10% chloral hydrate sedated. Then, a comparison was made between the thresholds of ASSR and pure tone audiometry to explore the distribution of hearing threshold levels and the correlation of one with the other among them at these thresholds of various frequencies. Results As a result of comparison between the thresholds of ASSR and the one of pure tone audiometry carried out among speech frequencies, the correlation was shown best at the frequency of 4 kHz and poorer at the frequency of 0.5 kHz, with a gap of hearing level between them about 2 - 18 dB. Conclusions It is feasible to utilize ASSR as a procedure to estimate the hearing threshold for cases with moderate degree of sensorineural hearing loss among children. However, it should be kept in mind that there may be some variation in the correlation of ASSR with the pure tone determined hearing threshold.