It appears to involve more primitive aspects of the brain, activating deep structures that may block pain at a spinal level — similar to how opioid analgesics work.
这似乎涉及到大脑更原始的问题，激活深层结构可能会阻止在脊椎级的疼痛-与阿司匹林片类镇痛药的作用相似。
Methods: Using three ladders pain analgesic WHO introduced, that is the first ladder giving NSAIDs. The second weak opioid 'analgesics, the third strong opioid analgesics.
方法：应用世界卫生组织推荐的三阶梯止痛法，即第一阶梯给非激素类消炎镇痛药，第二阶梯给弱阿片类止痛药，第三阶梯给强阿片类止痛药。
The use of opioid analgesics has a long history in clinical Settings, although the functions of opioid receptors, especially their role in the brain, are not well understood yet.
阿片类镇痛剂的临床应用具有悠久的历史。然而，阿片受体的功能，特别是其在脑内的作用，尚未完全阐明。
应用推荐