氧和暴露的时间尺寸和重症患者的临床结果:一个追溯的多数据库队列研究
Xiao-Yan Ding1,2,3, Hai-Ping Xu4, Jing-Ru Zhang5
1Cardiovascular Intensive Care Unit, Shengli Clinical Medical College of Fujian Medical University, Fuzhou University Affiliated Provincial Hospital, Dongjie 134, Gulou District, Fuzhou, Fujian, China.
Critical care (London, England)
|September 26, 2025
概括
危急病患者的最佳氧和度 (SpO2) 在94%-97%之间. 长期高SPO2 (>98%) 和低SPO2 (<94%) 都会增加死亡风险,这凸显了监测强度和持续时间的重要性.
科学领域:
- 关键护理医学 关键护理医学
- 肺部病理学 肺部病理学
- 生物医学工程 生物医学工程
背景情况:
- 大多数关于SpO2暴露模式的研究只关注强度,忽视暴露时间.
- 了解SpO2模式对于改善重症患者的临床结果至关重要.
研究的目的:
- 系统地调查SPO2暴露模式 (强度和持续时间) 与临床结果之间的关联.
- 为了确定最优的SPO2水平和持续时间,为重症患者.
主要方法:
- 从三个数据库 (SICdb,MIMIC-IV,eICU) 中对121,758名危急病患者进行了回顾性队列研究.
- 分析包括使用Cox和后勤回归模型的连续暴露 (热图) 和累积暴露.
- 限制性立方线分析检查了时间加权的SpO2与死亡风险的关联.
主要成果:
- 在SpO2和死亡率之间观察到U形关系.
- 确定最佳的SpO2范围为93.5-97%,其中96-97%提供最强的保护 (HR 0.714).
- 长时间的SpO2>98%显示保护作用减弱,而SpO2<93.5%增加了死亡风险 (HR 1.236).
结论:
- 危急病患者的氧化评估必须考虑SPO2强度和持续时间.
- 长时间的SPO2高于98%或低于94%应避免,以改善患者的治疗结果.
- 结果证实了SpO2暴露模式和死亡率之间的U形关系.
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