Electrical impedance myography in the detection of radiculopathy
Electrical impedance myography in the detection of radiculopathy
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DOI：
10.1002/mus.20377
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发表时间：
2005-09-01
期刊：
影响因子：
3.4
通讯作者：
Shiffman, CA
中科院分区：
文献类型：
--
作者：
Rutkove, SB;Esper, GJ;Shiffman, CA
电阻抗肌描记术（EIM）是一种用于神经肌肉疾病评估的基于生物阻抗的新技术。过去的工作集中在弥漫性疾病（如肌病）的评价EIM。在这项研究中，该方法的最基本的形式，。线性EIM用于评估限制性神经根病。10名正常受试者和10名单侧颈或腰骶神经根病患者，诊断肌电图和临床标准，入组。对所有个体进行双侧线性EIM，并与主要结果变量θ（平均值）进行比较。在正常受试者中，θ（avg）的侧-侧差异平均为0.64%，幅度不大于15.9%。在10例神经根病患者中，受累肢体的θ（avg）始终较低，平均侧-侧差异为15.3%，但范围低至72.3%;具有更显著慢性神经源性变化的肌肉倾向于显示θ（avg）的相对降低更大。这些发现支持EIM在评估局限性神经肌肉疾病中的潜在效用。
Electrical impedance myography (EIM) is a new bioimpedance-based technique for neuromuscular disease assessment. Past work has focused on EIM in the evaluation of diffuse diseases (such as myopathy). In this study, the method's most basic form,. linear-EIM, was used for the assessment of restricted radiculopathic disease. Ten normal subjects and 10 patients with unilateral cervical or lumbosacral radiculopathy, diagnosed by electromyography and clinical criteria, were enrolled. Linear-EIM was performed bilaterally on all individuals, and comparisons with the major outcome variable, theta(avg), were made. In normal subjects, side-to-side differences in theta(avg) averaged 0.64% and were no greater than 15.9% in magnitude. In the 10 patients with radiculopathy, theta(avg) was consistently lower in the affected extremity, with a mean side-to-side difference of 15.3%, but ranging as low as 72.3%; there was a tendency for muscles with more prominent chronic neurogenic change to show greater relative reductions in theta(avg). These findings support the potential utility of EIM in assessment of localized neuromuscular disease.