SOLEUS H-REFLEX TESTS IN DYSTONIA
SOLEUS H-REFLEX TESTS IN DYSTONIA
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DOI：
10.1002/mds.870100109
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发表时间：
1995-01-01
影响因子：
8.6
通讯作者：
DEVISSER, BWO
中科院分区：
文献类型：
--
作者：
KOELMAN, JHTM;WILLEMSE, RB;DEVISSER, BWO
对10例腿部肌张力障碍患者和6例手臂或颈部肌张力障碍患者进行了比目鱼肌H反射的震颤抑制、同义恢复曲线和最大H反射与直接肌肉电位的比值(H/M比)的测定。并与48例健康受试者进行比较。确定了有助于区分患者和健康受试者的H反射变量。在腿部肌张力障碍患者中，振动抑制没有对照组明显，而恢复曲线的后期促进作用增加。在腿部肌张力障碍患者中，在恢复曲线的晚期，测试反射的面积值超过了峰峰值，这与对照组的研究结果相反。这一发现可能归因于肌张力障碍患者增强的测试反射的同步性低于对照条件。在区分腿部肌张力障碍患者和对照受试者时，振动抑制参数和恢复曲线的后期促进阶段的组合似乎最有用。在有手臂或颈部肌张力障碍的患者和半收缩患者的健侧腿中，比目鱼肌H反射试验结果在正常范围内。我们使用的比目鱼肌H反射试验结果的异常似乎与接受检查的肢体是否存在临床体征有关，而与特征的严重程度无关。
Vibratory inhibition, the homonymous recovery curve and the ratio of the maximal H-reflex to direct muscle potential (H/M ratio) of the soleus H-reflex were assessed in 10 patients with leg dystonia and in six patients with arm or neck dystonia. The results were compared with those obtained in 48 healthy control subjects. H-reflex variables most helpful for the discrimination of patients and healthy subjects were identified. In patients with leg dystonia, vibratory inhibition was less marked than in control subjects, whereas late facilitation of the recovery curve was increased. In patients with leg dystonia, area values of test reflexes in the late facilitatory phase of the recovery curve exceeded peak-peak values, in contrast to findings in control subjects. This finding may be attributable to less synchronization of enhanced test reflexes in dystonia than in the control condition. In differentiating patients with leg dystonia from control subjects, a combination of parameters of vibratory inhibition and the late facilitatory phase of the recovery curve appeared most useful. In patients with arm or neck dystonia and in the unaffected legs of hemidystonic patients, soleus H-reflex test results were in the normal range. Abnormalities in the results of the soleus H-reflex tests we used appear to be related to the presence of clinical signs in the extremity under examination and not to the severity of features.