Quinlan J G, Iaizzo P A, Gronert G A, Lambert E H
Department of Anesthesiology, Mayo Clinic, Rochester, Minnesota.
Muscle Nerve. 1990 Apr;13(4):326-9. doi: 10.1002/mus.880130408.
A patient with slow muscle relaxation but without accompanying motor unit or myotonic electrical activity had a unique staircase twitch response to repeated nerve stimulation. During 1-Hz stimulation, twitches recorded by measurement of the ankle dorsiflexor group displayed progressively increasing relaxation times with successive stimuli (37% increase) unlike the progressively decreasing relaxation time of the normal response (12-37% decrease). The response may be diagnostic of this unusual myopathy; the test methods are noninvasive and easily tolerated.
一名肌肉松弛缓慢但无伴随运动单位或肌强直电活动的患者，对重复神经刺激有独特的阶梯状抽搐反应。在1赫兹刺激期间，通过测量踝背屈肌群记录的抽搐显示，与正常反应中逐渐缩短的松弛时间（缩短12%-37%）不同，连续刺激时松弛时间逐渐增加（增加37%）。该反应可能有助于诊断这种罕见的肌病；检测方法是非侵入性的，且患者易于耐受。
