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背景:肌电图检测是确诊注射性坐骨神经损伤重要方法之一,但其早期异常表现,异常程度与病程的相关性及各项指标的差异比较尚缺乏深入研究。目的:探讨注射性坐骨神经损伤的电生理特点。设计:以诊断为依据临床观察分析。地点和对象:104例南京医科大学附属脑科医院门诊确诊患儿,年龄4个月～14岁,病前均有明确臀部肌肉注射史,既往无其他神经肌肉疾病。干预:应用丹迪Neuromatic2000M型肌电仪检测患儿的患肢肌电图。主要观察指标:检测患儿的患肢腓总神经和胫神经/胫后神经的感觉传导速度(sensoryconductionvelocity,SCV)、运动传导速度(motorconduc-tionvelocity,MCV)、末端运动潜伏期(distalmotorlatency,dML)和末端复合肌肉动作电位波幅(distalcompoundmuscleactionpotentialamplitude,dCMAPA)、感觉神经动作电位波幅(sensorynerveactionpotentialampli-tude,SNAPA);同时检测坐骨神经支配肌的针极肌电图。结果:肌注后2～7d已可检出多项电生理异常。腓总神经支的神经传导速度(nerveconductionvelocity,NCV)异常率(68.0%)明显高于胫神经支(43.5%)(χ2=12.199,P<0.005)。腓总神经SCV,SNAPA和dML,dCMAPA异常程度与病程正相关(r=0.3068,P<0.005;r=0.2963,P<0.005;r=0.3376,P<0.001;r=0.2157,P<0.05)。8个月以上病?
BACKGROUND: Electromyography detection is one of the most important methods for the diagnosis of sciatic nerve injury injections. However, the early abnormalities, the correlation between the abnormalities and the course of disease, and the differences of various indexes are still lack of further study. Objective: To investigate the electrophysiological characteristics of injected sciatic nerve injury. Design: based on the diagnosis of clinical observation and analysis. Location and Subjects: 104 cases diagnosed as outpatients with brain hospital affiliated to Nanjing Medical University from 4 months to 14 years old had a clear history of intramuscular injection of buttocks and no previous other neuromuscular diseases. Intervention: Application of Dandy Neuromatic2000M electromyography in children with limb electromyography. MAIN OUTCOME MEASURES: Sensoryconductionvelocity (SCV), motorconductivityvelocity (MCV), distalmotorlatency (dML) and mean arterial pressure of the tibiofibular nerve The distal composite muscle action potential amplitude (dCMAPA) and the sensory nerve action potential amplitude (SNAPA) were measured. The needle electromyography of sciatic nerve was also detected simultaneously. RESULTS: A number of electrophysiological abnormalities were detected 2 ~ 7 days after intramuscular injection. The abnormal rate of nerve conduction velocity (NCV) of the common peroneal branch was significantly higher than that of the tibial nerve branch (43.5%) (χ2 = 12.199, P <0.005). The abnormalities of SCV, SNAPA, dML and dCMAPA in the common peroneal nerve were positively correlated with the course of the disease (r = 0.3068, P <0.005; r = 0.2963, P <0.005; r = 0.3376, P <0.001; r = 0.2157, P <0.05). 8 months or more disease?