Drory V E, Neufeld M Y, Korczyn A D
Department of Neurology, Tel-Aviv Sourasky Medical Center, Israel.
Electromyogr Clin Neurophysiol. 1993 Oct-Nov;33(7):441-6.
F-waves were analyzed in 40 patients shortly following the onset of moderate to severe flaccid hemiparesis due to hemispheric strokes. The test was repeated in 25 patients three or more months later. F-waves were recorded following trains of 20 stimuli from the ulnar and common peroneal nerves bilaterally. The persistence, minimal, maximal and average latencies, durations, amplitudes and areas of these waves were determined. Acutely, several F-wave parameters (persistence, maximal and average duration, amplitude and area) were significantly reduced on the paretic side. Changes were slightly more pronounced in patients with more severe weakness and flaccidity. In the chronic phase, the average F-wave amplitude and area values on the paretic side increased, becoming similar to or larger than on the normal side. However, the correlation with muscle strength and tone changes was poor.
对40例因半球性卒中导致中度至重度弛缓性偏瘫发作后不久的患者进行了F波分析。25例患者在三个或更多月后重复进行了该测试。双侧尺神经和腓总神经在20次刺激串后记录F波。测定了这些波的持续时间、最小、最大和平均潜伏期、持续时间、振幅和面积。急性期，患侧的几个F波参数（持续时间、最大和平均持续时间、振幅和面积）显著降低。在更严重的无力和弛缓患者中，变化更为明显。在慢性期，患侧的平均F波振幅和面积值增加，变得与正常侧相似或大于正常侧。然而，与肌肉力量和张力变化的相关性较差。
