面神经电图和瞬目反射在面神经炎中的应用

目的:探讨面神经电图和瞬目反射对面神经炎的诊断和预后评估的价值。方法:对42例面神经炎患者在发病10 d内进行面神经电图和瞬目反射的检测,并在治疗3个月后对24例患者进行复查。结果:瞬目反射患侧R1、R2和R2’缺如12例,R1、R2和R2’潜伏期延长30例,异常率100%。患侧面神经运动潜伏期延长及波幅降低28例,缺如1例,异常率为69.1%。瞬目反射异常率明显高于面神经电图(P<0.01)。复查时,R1瞬目反射各波缺如的8例患者中2例可检出波形,好转率为25%;原来R1延长的16例患者中10例恢复正常,好转率为62.5%;后一类患者的好转率明显高于前一类患者(P<0.05)。结论:瞬目反射可以作为面神经炎早期诊断的客观指标,对判断面神经受损程度和预后评估有重要作用。

Application of Electroneurography and Blink Reflex in Patients with Facial Paralysis

Objective: The electroneurography and blink reflex in patients with facial paralysis(Bell palsy) have been evaluated.Methods: Electroneurography and blink reflex were measured in 42 patients with facial paralysis 10 days and in 24 cases 3 months after the onset.Results: The ipsilateral R1,R2 and R2' waves were absent in 12 cases,and the latencies of R1,R2 and R2' were prolonged in 30 cases.In all,the abnormal rate was 100%.In 28 cases latent period was prolonged,and wave amplitude was lowered in the facial nerve in the ipsilateral side,and the wave was absent in 1 case,and the abnormal rate in electroneurography was 69.1 % in total.Three months later,2 of 8 patients with absent R1 waves were observed to have waves to some degree,and 10 out of 16 cases with prolonged R1 waves to have normal waves.Conclusion: Blink reflex could be used as an objective index for the early diagnosis of facial paralysis,and it has an important role in evaluating the degrees of facial nerve and prognosis.