CareFusion, Middleton, Wisconsin, USA.
Muscle Nerve. 2013 Apr;47(4):561-5. doi: 10.1002/mus.23636. Epub 2013 Mar 5.
Deep brain stimulators (DBS) have become a more widespread treatment option for individuals with centrally mediated movement disorders. Such devices are expected to create artifact in standard needle electromyographic (EMG) recordings.
Five subjects with DBS were studied with standard concentric needle electrode EMG in paraspinal and upper limb muscles.
All subjects showed EMG artifact directly related to, and corresponding with, the DBS unit settings. The artifact was very prominent in all paraspinal muscles, although the amplitude was less in lumbar compared with cervical levels. With a large ground electrode next to the insertion site, the artifact was sufficiently small to allow standard EMG examination of upper limb muscles.
The DBS artifact is so prominent in paraspinal muscles that it will not allow standard EMG examination for diagnostic purposes such as radiculopathy. The artifact itself can easily be distinguished from pathological insertional and spontaneous activity.
深部脑刺激器（DBS）已成为治疗中枢介导运动障碍患者的更广泛治疗选择。此类设备预计会在标准针式肌电图（EMG）记录中产生伪影。
对 5 名接受 DBS 的患者进行了研究，使用标准的同心针电极 EMG 对脊柱旁和上肢肌肉进行了研究。
所有患者的 EMG 伪影均与 DBS 单元设置直接相关且对应。尽管与颈椎相比，腰椎的幅度较小，但在所有脊柱旁肌肉中，伪影都非常明显。在插入部位旁边有一个大的接地电极，伪影足够小，可允许对上肢肌肉进行标准的 EMG 检查。
DBS 伪影在脊柱旁肌肉中非常明显，以至于不能进行标准的 EMG 检查以用于神经根病等诊断目的。伪影本身很容易与病理性插入性和自发性活动区分开来。
