Kennett R P, Fawcett P R
Department of Clinical Neurophysiology, Newcastle General Hospital, Newcastle upon Tyne, UK.
Electroencephalogr Clin Neurophysiol. 1993 Jun;89(3):170-6. doi: 10.1016/0168-5597(93)90130-h.
Repetitive nerve stimulation of the anconeus muscle is described. Control studies showed the test to be reliable and well tolerated over a range of stimulus frequencies and train lengths. Sixty-one patients with primary disorders of neuromuscular transmission were tested. Repetitive nerve stimulation of anconeus was abnormal in 2 of 21 patients with ocular myasthenia, but showed a significant decrementing response in 16 of 30 patients with generalized myasthenia gravis. In comparison with other muscles, repetitive nerve stimulation of anconeus was more sensitive than abductor digiti minimi, but equally sensitive as deltoid. The test may also be used to help characterize other disorders of neuromuscular transmission such as congenital myasthenia or the Lambert-Eaton myasthenic syndrome. Compared with single fibre EMG on extensor digitorum communis, repetitive stimulation of anconeus was usually, but not always, a less sensitive method of detecting a neuromuscular transmission disorder.
本文描述了对肘肌的重复神经刺激。对照研究表明，该测试在一系列刺激频率和串长范围内可靠且耐受性良好。对61例原发性神经肌肉传递障碍患者进行了测试。在21例眼肌型重症肌无力患者中，有2例肘肌重复神经刺激异常，但在30例全身型重症肌无力患者中，有16例出现明显递减反应。与其他肌肉相比，肘肌重复神经刺激比小指展肌更敏感，但与三角肌同样敏感。该测试还可用于帮助鉴别其他神经肌肉传递障碍，如先天性肌无力或兰伯特-伊顿肌无力综合征。与指总伸肌单纤维肌电图相比，肘肌重复刺激通常（但并非总是）是检测神经肌肉传递障碍不太敏感的方法。
