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优化和过量的新鲜气体流量比较用于输管前氧化:一个随机的,参与者盲目的,非劣势研究
Girish C Pathak1, Habib Md R Karim2, Subrata K Singha1
1Anaesthesiology and Critical Care, All India Institute of Medical Sciences, Raipur, Raipur, IND.
Cureus
|February 6, 2026
概括
最佳的新鲜气体流量 (FGF) 与过量的FGF在输管前氧化时同样有效,在机器输送的通风中达到目标过期氧化 (FeO2) 水平超过85%. 然而,对于90%的FeO2.2,三分钟还不够.
科学领域:
- 麻醉学 麻醉学
- 呼吸系统生理学 呼吸系统生理学
背景情况:
- 手动袋口罩通风提供可变分钟通风 (MV),限制新气流 (FGF) 对过期氧化 (FeO2) 的影响的评估.
- 一致的,机器传递的MV对先化氧化的影响需要进一步调查.
研究的目的:
- 为了评估最佳与过量的FGF在输管前氧化的疗效.
- 为了确定最佳的FGF能否达到目标FeO2水平,与机器控制通风过程中过量的FGF相比.
主要方法:
- 100名成年患者 (ASA I-III) 被随机分配到最佳的FGF (MV+500毫升) 或多余的FGF (+50%).
- 通风采用了以压力支 (PS) 为基础的技术,具有固定的挥发性剂设置.
- 在不同时间点测量过期的氧化度 (FeO2),目标为85%和90%的FeO2.
主要成果:
- 优化和过量FGF组都在实现目标FeO2水平方面表现出类似的有效性.
- 在五分钟后,两个组的FeO2平均值约为86% (p > 0.05).
- 达到85%FeO2的时间在两组之间是可比的,最佳的FGF需要平均160.16秒,而过量的FGF需要147.81秒.
结论:
- 在机器输送的基于PS的通风过程中,最佳FGF不低于过量的FGF,以达到FeO2>85%.
- 在封闭电路系统中,三分钟的输入前氧化不足以达到90%的FeO2目标,同时使用挥发性剂.
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