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对69例以眩晕为主的椎基底动脉缺血患者行脑干听觉诱发电位检查,异常率为79.8%;40例行脑干诱发电位、纯听力曲线测定及前庭功能试验,初步证实眩晕以脑干中枢性异常为主占55%,脑干与内听动脉耳蜗史、前庭支同时或分别受累占20%,耳蜗支与前庭支同时或分别受累占5%。作综合辅助检查能早期诊断眩晕为主的椎基底功脉缺血性疾病,可弥补CT对后颅凹脑干病变诊断的不足。
The brainstem auditory evoked potentials were examined in 69 patients with dizziness vertebrobasilar ischemia. The abnormality rate was 79.8%. The brainstem evoked potentials, pure hearing curves and vestibular function tests were performed in 40 patients. The main central anomalies accounted for 55% of the brain stem and internal auditory cochlear history, vestibular branch involved or accounted for 20% at the same time, cochlear and vestibular branch involved or accounted for 5%. As a comprehensive ancillary examination can diagnose vertigo-based vertebrobasilar ischemic disease, can make up for CT diagnosis of posterior cranial concave brain stem deficiency.