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在表面电极肌电图检查中,伪迹常影响图象,造成困扰。在肌电检查中更是如此。作者为解决这一问题进行了研究,在实践中找出用简单的针划皮肤,以降低电极阻抗。作者图示了几种自制的带柄的划痕针,在安放记录电极的小区城内,先进行酒精擦拭,然后用此针轻轻地划痕。在划痕时可用手将皮肤轻轻捏起再行轻划,划时不能太重,以免造成病人疼痛。经过几次实践,检查者就能掌握好
EMG in the surface electrode examination, artifacts often affect the image, causing trouble. In the EMG examination even more so. The authors conducted a study to address this issue, finding out in practice the use of simple needles to skin to reduce electrode impedance. The authors illustrate several homemade scratched needles that are wiped with alcohol and then gently scratched with this needle in the cell where the recording electrodes are placed. In the scratch can be used when the skin gently pinch up and then light scratch, scratch can not be too heavy, so as to avoid causing the patient pain. After several practices, the examiner can master well