肌电图在神经根病诊断中的应用。
Electrical impedance myography in the diagnosis of radiculopathy.
机构信息
Department of Neurology, Beth Israel Deaconness Medical Center, 330 Brookline Avenue, Boston, Massachusetts, 02215, USA.
出版信息
Muscle Nerve. 2013 Nov;48(5):800-5. doi: 10.1002/mus.23833. Epub 2013 Sep 11.
INTRODUCTION
We sought to determine whether electrical impedance myography (EIM) could serve as a diagnostic procedure for evaluation of radiculopathy.
METHODS
Twenty-seven patients with clinically and radiologically diagnosed cervical or lumbosacral radiculopathy who met a "gold standard" definition underwent EIM and standard needle electromyography (EMG) of multiple upper or lower extremity muscles.
RESULTS
EIM reactance values revealed consistent reductions in the radiculopathy-affected myotomal muscles as compared with those on the unaffected side; the degree of asymmetry was associated strongly with the degree of EMG abnormality (P < 0.001). EIM had a sensitivity of 64.5% and a specificity of 77.0%; in comparison, EMG had a sensitivity of 79.7% but a specificity of 69.7%.
CONCLUSIONS
These findings support the potential for EIM to serve as a new non-invasive tool to assist in diagnosis of radiculopathy; however, further refinement of the technique is needed for this specific application.
简介
我们旨在确定电阻抗肌图（EIM）是否可作为神经根病评估的诊断程序。
方法
27 名经临床和放射学诊断为颈或腰骶神经根病的患者符合“金标准”定义，接受了 EIM 和多个上肢或下肢肌肉的标准针肌电图（EMG）检查。
结果
与未受影响侧相比，EIM 电抗值显示受累神经根病肌节的肌肉明显减少；不对称程度与 EMG 异常程度密切相关（P<0.001）。EIM 的灵敏度为 64.5%，特异性为 77.0%；相比之下，EMG 的灵敏度为 79.7%，特异性为 69.7%。
结论
这些发现支持 EIM 作为一种新的非侵入性工具来辅助神经根病诊断的潜力；然而，对于这种特定应用，需要进一步改进该技术。
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