Procacci P, Francini F, Maresca M, Zoppi M
Appl Neurophysiol. 1979;42(3):125-34. doi: 10.1159/000102356.
In a group of patients suffering from reflex sympathetic dystrophies, the skin potential and EMG responses induced by electrical stimuli applied to the skin were recorded in the four limbs in order to study somato-sympathetic and somato-motor reflexes. In most patients, the amplitude, delay and shape of the cutaneous responses as well as the pattern of the EMG responses were different from those observed in normal subjects. In particular, it was possible to correlate the pattern of the cutaneous and muscular responses with the severity of the disease. The cutaneous sensory thresholds to electrical stimuli (tactile, tingling and pain threshold) showed different values in the dystrophic and in the contralateral limb. In all patients, a block of the sympathetic chain ipsilateral to the dystrophic limb was performed with local anesthetics. 1 h after the block, the cutaneous responses disappeared not only in the blocked limb but also in the contralateral limb. 48 h after the block, muscular and cutaneous responses as well as sensory thresholds showed a pattern similar to that observed in normal subjects. These findings show that the sympathetic block provides a resetting of the sensory thresholds and reflexes.
在一组患有反射性交感神经营养不良的患者中，为了研究躯体 - 交感神经和躯体 - 运动反射，记录了施加于皮肤的电刺激在四肢诱发的皮肤电位和肌电图反应。在大多数患者中，皮肤反应的幅度、延迟和形状以及肌电图反应的模式与正常受试者观察到的不同。特别是，有可能将皮肤和肌肉反应的模式与疾病的严重程度相关联。电刺激的皮肤感觉阈值（触觉、刺痛和疼痛阈值）在营养不良的肢体和对侧肢体中显示出不同的值。在所有患者中，用局部麻醉剂对营养不良肢体同侧的交感神经链进行了阻滞。阻滞后1小时，皮肤反应不仅在阻滞的肢体中消失，而且在对侧肢体中也消失。阻滞后48小时，肌肉和皮肤反应以及感觉阈值显示出与正常受试者观察到的模式相似的模式。这些发现表明，交感神经阻滞可使感觉阈值和反射重新设定。
