儿童chirp听性脑干反应与行为测听的相关性

Correlation between chirp auditory brainstem response and behavioral hearing threshold in children

目的采用chirp信号作为声刺激进行听性脑干反应（ABR）测试，观察chirpABR阈值与行为测听的相关性，探讨chirpABR作为儿童临床客观听力评估的可行性。方法选择2007年8月至9月佛山市听觉语言康复中心的听力障碍儿童和广卅I市儿童医院听力门诊的正常听力儿童共22例（共35耳）作为研究对象，分别进行行为测听和chirpABR测试，并对chirpABR反应阈和行为测听阈值进行Pearson相关性分析。结果22例接受测试儿童中男14例，女8例，年龄3．3～6．5岁，平均年龄4．8岁。纳入研究的35耳中，正常听力6耳，听力损失轻度2耳、中度4耳、重度10耳、极重度13耳。行为测听0．5、1、2、4kHz平均听阈与chirpABR阈值，0．5kHz听阈与L—chirpABR阈值，1—4kHz平均听阈与U—chirpABR阈值之间的相关系数分别为0．939，0．900及0．930，P值均〈0．05。结论chirpABR作为一种客观测听技术，能够较好地反映儿童的听力水平，有希望应用到临床工作中。

Objective To investigate the correlation between thresholds in the chirp-ABR and behavior andiogram in order to find out if it is possible to be used as an clinical application of the chirp-ABR in estimating hearing sensitivity. Methods Twenty-two cases with hearing loss or normal hearing were enrolled in the study. The behavior audiogram and the response thresholds of chirp ABR （ including chirp ABR, L-chirp ABR and U-chirp ABR） were obtained from 35 cars. Results Twenty-two cases were of both genders. The age was between 3.3 - 6.5 years old with the average age of 4.8 years old. Divided by the degree of hearing loss, in the 35 ears, there were 6 with normal heating, 2 with slightly heating loss, 4 with moderate heating loss, 10 with severe heating loss and 13 with profound hearing loss. The Pearson correlation coefficients were 0. 939,0. 900 and 0. 930, respectively, which got from the data between the average of 0.5 - 4 kHz and chirp ABR respond threshold , 0.5 kHz and L-chirp ABR, and the average of 1 -4 kHz and U-chirp ABR. Conclusion As an objective test, the response threshold of chirp-ABR and the behavior audiogram were a highly correlated with each other, but more application in more subjects is needed.