感觉神经性聋患者的听觉脑干诱发电位

本文利用听觉脑干诱发电位(ABR)方法对各种感觉神经性聋患者61人89耳的ABR的特点进行了研究,并与脑干占位性疾病进行鉴别。研究结果发现这些病人Ⅰ波潜伏期延长者57耳64％,Ⅲ波潜伏期延长者18耳26.1％;Ⅴ波潜伏期延长者40耳44.9％。但这些患者Ⅰ—Ⅴ波间期及两耳Ⅴ波潜伏期差(ILD)均在正常范围,故此两项指标应作为与脑干占位病变鉴别的主要依据。

RESEARCH ON THE AUDITORY BRAIN STEM RESPONSE IN SENSORINEURAL DEAF PATIENTS

The brain stem response was studied in 10 normal young (20 ears) adults and 61 sensorineural deaf patients (89 ears). The prolongation of wave Ⅰ latency was observed in 57 ears (64%) of sensorineural deaf patients as compared with young people, wave Ⅲ in 18 ears (26. 1%) and wave Ⅴ in 40 ears (44. 9%) . The Ⅰ-Ⅴ interval and interaural latency difference (ILD) in the sensorineural deaf patients are within normal limits . Therefore , abnormality in hearing is mainly in the cochlea and these values are important in the diagnosis of acoustic tumor. According to our results, it was proved that prolongation of wave I was not only seen in the high but also in the low tone deafness and the flat form deafness. The prolongation of wave I occuring in patients with Meniere's disease was found to be more than those in the other three kinds of sensorineural deaf patients (sudden deafness, toxic deafness and noise deafness) (P<0. 025).