The american society of regional anesthesia ( asra ) consensus statements on neuraxial anesthesia and anticoagulation states that no definitive recommendation can be made for removal of epidural catheters in patients with therapeutic levels of oral anticoagulants Asra关于轴索麻醉和抗凝状态一致强调，对于接受口服抗凝药治疗患者拔除硬膜外导管没有作出确定的建议。
Although regional anesthesia , especially central conduction blockade , produces a favorable sympathectomy and increased limb blood flow , compensatory vasoconstriction in non - anesthetized areas may actually produce vaso - occlusive 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 ] 。
