Although regional anesthesia, especially central conduction blockade, produces a faorable sympathectomy and increased limb blood flow, compensatory asoconstriction in non-anesthetized areas may actually produce aso-occlusie crises in these areas (5).

• 虽然区域麻醉，特别是中枢传导阻滞可产生有效的交感神经阻滞并增加肢体血流，但是非麻醉部位发生代偿性血管收缩，可能使这些部位发生血管阻塞性危象[5]。