Diagnostic value of low-frequency repetitive nerve stimulation in patients with ocular myasthenia gravis

VernacularTitle:低频重复电刺激检查对眼肌型重症肌无力的诊断价值
Author: Lei CAO ¹ ; Yanjie HU
Author Information

1. 安徽医科大学第二附属医院神经内科
Keywords: Ocular myasthenia gravis; Low-frequency repetitive nerve stimulation
From: Chinese Journal of Primary Medicine and Pharmacy 2017;24(24):3736-3738
CountryChina
Language:Chinese
Abstract: Objective To investigate the diagnostic value of low-frequency repetitive nerve stimulation (RNS) in patients with ocular myasthenia gravis(MG).Methods The clinical data of the low-frequency RNS of 54 in-patients with ocular MG were analyzed.Results The positive rate of low-frequency RNS was 53.7％ in 54 patients.The abnormal rate of the facial nerve and the proximal limb nerve was significantly higher than that of low limb distal nerve.The differences were statistically significant(x2 =6.783,P =0.009;x2 =4.167,P =0.041).In all the examined nerves,the abnormal rate of right facial nerve was the highest(46.3％),and the lowest on the ulnar nerve(11.1％).The abnormal rate was statistically significant in all these nerves (x2 =21.995,P =0.001).Conclusion Low-frequency RNS plays an important role in the diagnosis of ocular MG,and the facial nerve should be the first choice in this examination.