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目的 探讨脑干听觉诱发电位 (BAEP)在语言障碍患儿中表现特征、检查技术特点及临床价值。方法 (1)分析12 0dBpeSPL获得的Ⅰ、Ⅲ、Ⅴ等的BAEP波的潜伏期、波间期 ;(2 )降低刺激强度检查 ,获得不同分贝的听阈结果 ,并与12 0dBpeSPL进行比较。结果 (1) 2 37例语言障碍患儿BAEP异常 16 8/ 2 37例 (70 9% ) ,其中 132dBpeSPL检查BAEP听力丧失116 / 2 37例 (48 9% ) ,听阈不同程度增高 5 2 / 2 37例 (2 1 9% ) ;听阈完全正常 6 9/ 2 37例 (2 9 1% )。 (2 ) 2 2 / 2 37例 (9 3% )患儿12 0dBpeSPLⅠ、Ⅲ、Ⅴ等BAEP波的潜伏期、波间期正常 ,但听阈却有不同程度增高。 结论 (1)语言障碍患儿BAEP异常率高 ,但尚有近 1/ 3患儿听觉功能正常 ,故应早期、及时进行BAEP检查 ,以明确是否存在听神经损害或听觉功能异常 ;(2 )语言障碍患儿仅作 12 0dBpeSPL检查是不够的 ,必须测定听阈。当听阈增高时 ,需逐级增加刺激强度检测 ,才能准确反应患儿的听觉功
Objective To investigate the features, clinical features and clinical value of brainstem auditory evoked potential (BAEP) in children with speech disorders. Methods (1) The latency and wave interval of Ⅰ, Ⅲ and Ⅴ BAEP wave obtained at 12 0dBpeSPL were analyzed. (2) The stimulation intensity was reduced to obtain the threshold results of different decibels, and compared with 12 0dBpeSPL. Results (1) BAEP was abnormal in 1637 children (70.9%) in 277 children with language disorder, of which 132 (48.9%) had hearing loss at 132dBpeSPL and 52/2 37 cases (21.9%), complete hearing threshold 6 9/2 37 cases (291%). (2) The incubation period and wave interval of 120 dBpeSPLⅠ, Ⅲ, Ⅴ BAEP in 37 cases (93%) were normal, but the hearing threshold was increased to some extent. Conclusions (1) The rate of abnormal BAEP in children with speech impairment is high, but nearly 1 in 3 children have normal auditory function. Therefore, BAEP examination should be conducted in time to find out whether auditory nerve damage or auditory function abnormalities exist. (2) Language Only 12 0dBpeSPL examination of children with disorders is not enough, and the threshold must be determined. When the threshold is increased, the need to step by step to stimulate the intensity of detection, in order to accurately reflect the auditory function in children