Veilleux M, Stevens J C, Campbell J K
Department of Neurology, Mayo Clinic, Rochester, MN.
Muscle Nerve. 1988 Jun;11(6):571-5. doi: 10.1002/mus.880110608.
Twenty patients with thoracic outlet syndrome (TOS) seen at the Mayo Clinic between October 1984 and November 1985 were studied prospectively with routine nerve conduction studies, concentric needle examination, and bilateral median and ulnar somatosensory evoked potentials (SEPs). Results of nerve conduction studies and needle examination were abnormal in 30% of the patients, one patient having a reduced ulnar sensory nerve action potential amplitude and five others having neurogenic motor unit potential changes in the hand muscles. Ulnar SEPs were abnormal in three patients (15%), and median SEPs were abnormal in one patient, who also had abnormalities in ulnar SEPs. In patients with TOS, routine nerve conduction studies and needle examination were the most helpful electrophysiologic studies in excluding more common conditions. The routine use of ulnar SEPs in the evaluation of patients with TOS is probably not worthwhile.
1984年10月至1985年11月期间，在梅奥诊所就诊的20例胸廓出口综合征（TOS）患者接受了前瞻性研究，采用常规神经传导研究、同心针电极检查以及双侧正中神经和尺神经体感诱发电位（SEP）。30%的患者神经传导研究和针电极检查结果异常，1例患者尺神经感觉神经动作电位波幅降低，另外5例患者手部肌肉出现神经源性运动单位电位改变。3例患者（15%）尺神经SEP异常，1例患者正中神经SEP异常，该患者尺神经SEP也异常。在TOS患者中，常规神经传导研究和针电极检查是排除更常见疾病最有用的电生理检查。在评估TOS患者时常规使用尺神经SEP可能不值得。
