Park T A, Harris G F
Department of Physical Medicine and Rehabilitation (T.A.P.) Medical College of Wisconsin, Milwaukee, USA.
Am J Phys Med Rehabil. 1996 May-Jun;75(3):232-4. doi: 10.1097/00002060-199605000-00018.
This report describes a new technique for placing intramuscular fine wire electrodes into muscles for kinesiologic electromyographic (EMG) studies. Currently, a pair of fine wire electrodes (one active, one reference) within a hypodermic needle is inserted into the selected muscle. The needle is then withdrawn, leaving the two fine wires positioned within the muscle. Electrical stimulation of the muscle through these fine wire electrodes confirms their correct placement. However, if positioning is incorrect, additional pairs of wires are inserted within needles until correct placement is achieved. Our "guided" method combines this "blind" technique with diagnostic needle EMG techniques. Using a conventional EMG machine and selective activation of the desired muscle, the electromyographer inserts the hypodermic needle while monitoring the muscle's electrical signal through the advancing fine wire electrodes. This signal is used to "guide" the needle into the proper muscle. Once correct positioning of the wires is confirmed by the EMG signal, the needle is removed. With this techniques additional needle insertions are avoided, electrical stimulation is seldom needed, and rarely studied muscles are accessed as easily as commonly studied ones. We have used this technique with pediatric and adult patients as well as in kinesiologic EMG research and have found it to be well tolerated and reliable.
本报告描述了一种将肌内细丝电极置于肌肉中进行运动学肌电图（EMG）研究的新技术。目前，将皮下注射针内的一对细丝电极（一根为活性电极，一根为参考电极）插入选定的肌肉。然后拔出针，使两根细丝留在肌肉内。通过这些细丝电极对肌肉进行电刺激可确认其正确放置。然而，如果放置不正确，则需在针内插入额外的细丝对，直到实现正确放置。我们的“引导”方法将这种“盲目”技术与诊断性针电极肌电图技术相结合。肌电图检查人员使用传统的肌电图机并选择性激活所需肌肉，在通过前进的细丝电极监测肌肉电信号的同时插入皮下注射针。该信号用于将针“引导”至适当的肌肉。一旦通过肌电图信号确认细丝放置正确，就拔出针。使用这种技术可避免额外的针插入，很少需要电刺激，并且像常见研究的肌肉一样容易进入很少研究的肌肉。我们已将此技术应用于儿科和成人患者以及运动学肌电图研究中，发现它耐受性良好且可靠。
