摘要
目的探讨椎旁定位腰骶体感诱发电位(LSSEP)在腰椎间盘突出症中的变化及其诊断意义。方法对84例有L4、L5和S1神经根损害表现的腰椎间盘突出症的患者进行胫后神经体感诱发电位(SEP)、皮节体感诱发电位(DSEP)和椎旁定位LSSEP检查,测定其N40的潜伏期,并对多水平突出症患者的LSSEP与腰椎MRI比较。结果胫后神经SEP检测异常率为42.86%;L5、S1DSEP检测的异常率为90.48%;椎旁定位LSSEP异常率为95.24%,比胫后神经SEP检测异常率明显增高(P<0.005)。在L3-4椎间盘突出中,以L4的LSSEP异常为主;在L4-5椎间盘突出中以L5的LSSEP为主。结论椎旁定位LSSEP检测可能是诊断腰椎间盘突出症快捷、可靠、敏感的检测方法,其结果与神经根受累水平相一致。
Objective To evaluate the role of lumbosacral somatosensory evoked potential （LSSEP） in the diagnosis of lumbosacral disc herniation （LDH）. Methods Somatosensory evoked potential （SEP） from posterior tibial nerve , L4, L5 and S1 dermatomes SEP and LS SEP were recorded from 84 patients with radiculopathy caused by LDH. Results The tibial nerve SEP was abnormal in 36 cases（42. 86%） ,the SEP from L5 and/or S1 dermatomes was abnormal in 76 cases （90. 48%） and the LSSEP was abnormal in 80 cases （95. 24%）（p〈0. 005）. The abnormality of SEP from lumbosacral nerve（L2_3, L3-4, L4-5 and L5 S1 ） was detected mainly in patients with LDH at the level of L3, L4, L5 and S1. Conclusions The LSSEP was a sensitive method for the diagnosis of the disc herniation.
出处
《卒中与神经疾病》
2007年第1期41-43,共3页
Stroke and Nervous Diseases
关键词
体感诱发电位
椎旁定位
腰椎间盘突出症
诊断
Somatosensory evoked potential Lumbosacral disc herniation Diagnosis
