瞬目反射正常值及初步临床应用

The normal value and clinical applications of the blink reflex

目的了解健康成人瞬目反射正常值及其临床应用价值。方法采用Ｅｖｏｌｕｔｉｏｎ型神经肌肉记录仪检测，表面电极直接刺激眶上神经，诱发瞬目反射（ｂｌｉｎｋｒｅｆｌｅｘ，ＢＲ）。在同侧眼轮匝肌记录出短潜伏期波（Ｒ１）和双侧眼轮匝肌记录出长潜伏期波（Ｒ２，Ｒ２’）。对２０名（４０侧）健康人和３０例患者（其中包括三叉神经疾病，面神经疾病及听神经瘤）进行瞬目反射测试。结果ＢＲ潜伏期健康成人平均值Ｒ１为１０．１ｍｓ，Ｒ２和Ｒ２’为３０．４ｍｓ和３０．７ｍｓ。患者组患侧ＢＲ各波潜伏期延长，与健侧和健康人相比较，经ｔ检验，Ｐ＜０．０１，差异有极显著性。结论测试结果表明该技术简单、可靠，对三叉神经、面神经疾病和听神经瘤的早期诊断能提供有价值的电生理测试结果。

Objective To study the normal value and clinical applications of blink reflex. Methods Using the clinical electrodiagnostic techniques , the orbital nerve was stimulated to elicit the blink reflex. Results In 20(40 sides) normal subjects, two components (R 1 and R 2) had been documented . The latencies were about 10.1 ms for R1,30.4 ms and 30.7 ms seperatly for R 2 and R 2'. In 30 patients with trigeminal and facial nerve diseases and acoustic neuromas, the latencies on the affected sides were apparently longer or the reflex disappeared( P <0.01). Conclusion This study indicates that the simple, harmless electrodiagnostic measurements are of value in the initial investigation of trigeminal and facial nerve diseases and acoustic neuroma.