非阿片类镇痛药 meaning in Chinese

nonopioid analgesic

Background : the supplementation of an opioid by a non - opioid analgesic is a widely accepted technique for the treatment of postoperative pain
背景：一种阿片类镇痛药追加一种非阿片类镇痛药是一种公认的术后疼痛的治疗方法。
However , it is still unclear whether a combination of different non - opioids has an advantage in terms of an improved analgesia and / or a reduction of the opioid - related adverse effects
然而，对于这种将不同非阿片类镇痛药联合应用，是否有助于改善镇痛疗效和/或减少阿片类药物相关的副作用尚不清楚。
Methodology : a systematic analysis of the literature was performed searching for randomized , controlled trials studying the effects of a combination of two non - opioid analgesics in order to reduce postoperative opioid requirements and / or postoperative pain
方法：系统分析了检索出的相关文献，这些文献都是关于将两种非阿片类镇痛药联合应用以减少术后阿片类药物需要量和/或减少术后疼痛的疗效的随机对照性研究。