EMG诊断臂丛神经损伤的临床特征观察

目的 观察分析肌电图（EMG）诊断臂丛神经节前损伤的临床特征.方法 检测48例患者的三角肌、肱二头肌、伸指总肌、小指展肌、拇短展肌及腋神经、肌皮神经、桡神经、正中神经、尺神经,应用EMG仪测定支配肌肉的EMG及运动神经传导速度、感觉神经传导速度,对运动单位电位进行研究,并观察肌肉的自发电活动,同时测定神经的复合肌肉动作电位,计算出神经传导速度和潜伏期.结果 48例患者中,不完全损伤30例,完全损伤18例;根以下受损33例,根性受损15例.结论 EMG诊断对臂丛神经损伤的诊断、定位、定性分类都具有重要意义.

Clinical features of observation on EMG in diagnosing brachial plexus injury

Objective To observe and analyze the clinical features of EMG in diagnosing brachial plexus injury. Methods The deltoid,biceps,extensor digitorum muscle abductor muscle abductor pollicis brevis and axillary nerve, musculocutaneous nerve,radial nerve,median nerve,ulnar nerve of 48 cases were detected.The dominate muscle elec- tromyography and motor nerve conduction velocity,sensory nerve conduction velocity was detected by EMG instrument. The motor unit potential was studied,and observed the spontaneous electrical activity of the muscles,the nerve com- pound muscle action potential was deterred at the same time,calculateed the nerve conduction velocity and the incuba- tion period. Results In 48 patients,30 cases were incomplete injury patients,18 cases were completely injury patients; 33 cases were below the root damage,15 cases were the root damage. Conclusion EMG diagnosis has important signifi- cance in the diagnosis of brachial plexus injury,positioning,qualitative classification.