39例脊髓占位性病变的诱发电位与临床分析

目的：研究脊髓压迫症的经颅运动诱发电位(MEP)和短潜伏期体感诱发电位(SLSEP)对脊髓功障碍诊断的意义。方法：对39例脊髓压迫症的病人进行MEP和SLSEP检测。结果：所有病人的MEP和SLSEP检查的异常结果与临床脊髓压迫症的部位相关，无假阳性结果。EP和SLSEP的异常率分别为75．8％、74.3％，MEP出现波幅下降或缺失比SLSEP多见，而SLSEP更常见表现为潜伏期的延长。在临床上无运动或感觉功能障碍的病人中．分别出现25.0％的MEP异常(2／8)或66.7％的SLSEP异常(16／24)。结论：MEP和SLSEP均有助于脊髓功能障碍的诊断，甚至能先于临床表现提供一些亚临床脊髓神经功能障碍的病灶。

Study on Motor and Somatosensory Evoked Potentials in the Patients with Diseases Compressing the Spinal Cord

Objective: to observe the changes of MEP and SLSEP in the patients with disease compressing the spinal cord. Methods: 39 cases suffered from such disease compressing the spinals cord, underwent investigations with MEP and SLSEP. Result: There were no false positive results of MEP and SLSEP with regard to the site of compressing the spinal cord in these patients. The abnormal rate of MEP (75.8% ) was slightly hightly than that of SLSEP (74.3% ) . MEP more often occurred with decreased amplitudes or absence. SLSEP more often occurred with prolonged latencies. Pathological MEP(2/8,25.0 % ) or SLSEP (16/24,66.7 % ) were found in the patients with no motor or sensory disturbances. Conclude:MEP and SLSEP are helpful in the diagnosis of spinal function disturbance,even it can find subclinical disturbance.