A COMPARISON OF METHODS TO ASSESS THE EXCITABILITY OF LOWER MOTONEURONS
A COMPARISON OF METHODS TO ASSESS THE EXCITABILITY OF LOWER MOTONEURONS
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DOI：
10.1017/s0317167100042554
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发表时间：
1992-02-01
影响因子：
3
通讯作者：
MILANOV, IG
中科院分区：
文献类型：
--
作者：
MILANOV, IG
本文对120例脑卒中后痉挛性轻偏瘫患者下运动神经元兴奋性的三种测定方法--TA反射、H反射和F波进行了比较。在次最大电刺激胫神经后，记录比目鱼肌的H反射。在叩击跟腱后记录比目鱼肌的T-跟腱（TA）反射。超极量电刺激正中神经、尺神经、腓神经和胫神经后，在远端肢体肌肉中记录到F波。患者健侧作为对照。痉挛侧TA反射、H反射和F波振幅增加。所有振幅比：TA/M、H/M、Fmax/M和Fmean/M均增加。H反射阈值降低。痉挛侧的F波持续时间、持续时间和相数也增加。尽管临床上肌张力降低，但治疗后TA或H反射参数无变化。另一方面，所有组中的F波参数在治疗后趋于正常化。结论：F波是一种比TA和H反射更敏感的评价下运动神经元兴奋性的方法。
The purpose of this investigation was to compare three methods of assessing the excitability of lower motoneurones - TA-reflex, H-reflex and F-wave - in 120 patients with spastic hemiparesis following a stroke. The H-reflex was recorded from the soleus muscle after submaximal electrostimulation of the tibial nerve. The T-Achilles (TA) reflex was recorded from the soleus muscle after percussion of the Achilles tendon. The F-wave was recorded in the distal limb muscles after supramaximal electrostimulation of the median, ulnar, fibular and tibial nerves. The patient's healthy side was used as a control. The TA-reflex, H-reflex and F-wave showed increased amplitudes on the spastic side. All amplitude ratios: TA/M, H/M, Fmax/M and Fmean/M were increased. The H-reflex thresholds were decreased. The F-wave duration, persistence and number of phases were also increased on the spastic side. Despite clinically decreased muscle tone, there were no changes in TA or H-reflex parameters after treatment. On the other hand, F-wave parameters tended to normalize after treatment in all groups. In conclusion, the F-wave is a more sensitive method than the TA and H-reflexes in assessing the excitability of the lower motoneurone.