Lo Yew-Long, Prakash Kumar M, Leoh Teng-Hee, Tan Yam-Eng, Dan Yan-Fang, Ratnagopal Pavanni
Department of Neurology, National Neuroscience Institute, Singapore General Hospital, Singapore.
Arch Phys Med Rehabil. 2005 Aug;86(8):1702-5. doi: 10.1016/j.apmr.2005.03.016.
To define the optimal nerve conduction study (NCS) technique of the pectoral nerves and evaluate its clinical utility.
Prospective electrophysiologic study with healthy controls.
Electrophysiologic laboratory in a large general hospital.
Thirty healthy controls and 10 patients with cervical root or brachial plexus pathologies.
Not applicable.
Correlation of pectoral NCS with electromyography and magnetic resonance imaging.
For pectoral NCS, the mean values +/- standard deviation of onset latency, amplitude, and interside amplitude ratio (ratio of smaller over larger amplitude) were 2.01+/-0.22 ms, 11.75+/-2.21 mV, and .95+/-.04 mV, respectively. Subject age correlated significantly with both onset latency (r=.46, P<.001) and amplitude (r=-.34, P<.008). All 5 patients with brachial plexopathy had amplitude ratios below the normal limit of controls (.87). However, this was not seen for all 5 patients with cervical spondylotic radiculopathy.
The pectoral NCS technique is feasible in healthy subjects. It is useful when differentiating brachial plexopathy from cervical root lesions.
确定胸神经传导研究（NCS）的最佳技术，并评估其临床实用性。
对健康对照者进行前瞻性电生理研究。
大型综合医院的电生理实验室。
30名健康对照者和10例颈神经根或臂丛神经病变患者。
不适用。
胸神经传导研究与肌电图及磁共振成像的相关性。
对于胸神经传导研究，起始潜伏期、波幅及双侧波幅比（较小波幅与较大波幅之比）的平均值±标准差分别为2.01±0.22毫秒、11.75±2.21毫伏和0.95±0.04毫伏。受试者年龄与起始潜伏期（r = 0.46，P < 0.001）和波幅（r = -0.34，P < 0.008）均显著相关。所有5例臂丛神经病变患者的波幅比均低于对照者的正常下限（0.87）。然而，并非所有5例颈椎病性神经根病患者均出现这种情况。
胸神经传导研究技术在健康受试者中可行。在区分臂丛神经病变与颈神经根病变时有用。
