在全身麻醉诱导下进行口罩辅助通风期间,对患者的氧气储备进行新鲜氧气流量的准实验性研究
Yubo Shi1, Ying Jin1, Jianli Song1,2
1Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, China.
Frontiers in medicine
|October 2, 2023
概括
在麻醉期间增加新鲜氧气流量可以改善氧气储备和潮末氧气度 (EtO2). 较高的流速提高了氧化,尽管安全呼吸暂停时间 (SAT) 在测试水平之间没有显著差异.
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:
- 在全身麻醉期间优化氧化对于患者的安全至关重要.
- 了解新鲜氧气流对氧气储备的影响对于麻醉管理至关重要.
研究的目的:
- 研究在接受全身麻醉的患者的口罩辅助呼吸过程中,不同新鲜氧气流速对氧气储备的影响.
- 为了确定新鲜氧气流量和关键通风参数之间的相关性.
主要方法:
- 一项涉及72名患者的准实验性研究,这些患者被随机分配到新鲜氧流组 (1,2,4,8L/分钟) 进行2分钟的口罩辅助通风.
- 主要终点:安全无呼吸时间 (SAT),定义为SpO2降低到90%的时间.
- 二级终点包括终潮氧气度 (EtO2),终潮二氧化碳 (EtCO2),SpO2和CO2消除.
主要成果:
- 在新鲜氧流量和EtO2 (r=0.52,p<0.0001) 之间观察到显著的正相关性.
- 较高的新鲜氧气流量率 (4和8L/分钟) 导致相比较低的速率 (1和2L/分钟) 的EtO2水平明显更高.
- 虽然在统计学上并不显著,但趋势表明氧气储量增加,新鲜氧气流量增加.
结论:
- 在口罩辅助通风过程中,新鲜氧气的流量会对潮尾氧气度产生积极的影响.
- 增加新鲜氧的流量可能会增加患者的氧气储备,尽管需要进一步的研究来确认安全的呼吸暂停时间的显著差异.
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