在系统性缺血-再输液损伤中,高氧诱导的二次呼吸系统衰竭
Yu Okuma1,2, Lance B Becker1, Tsukasa Yagi1
1Feinstein Institutes for Medical Research, Northwell Health System, Manhasset, NY, USA.
Advances in experimental medicine and biology
|October 14, 2024
概括
心脏骤停 (CA) 后的高氧疗法可能会导致肺损伤. 气膜-动脉氧气差 (AaDO2) 与肺有很强的相关性,这表明它与肺有关.
科学领域:
- 心脏病学 心脏病学
- 肺部病理学 肺部病理学
- 关键护理医学 关键护理医学
背景情况:
- 过度补充氧气 (例如100%O2) 在心脏骤停 (CA) 后的患者中可能会损害器官功能.
- 确定最佳的氧化指标对于预防高氧化器官损伤至关重要.
- 过氧引起的肺损伤及其与CA后气体交换参数的关联需要进一步调查.
研究的目的:
- 在心脏骤停后的老鼠模型中评估高氧性肺损伤.
- 评估大气管 - 动脉氧差 (AaDO2) 和肺之间的关联.
- 确定AaDO2是否可以作为CA后高氧性肺损伤的指标.
主要方法:
- 鼠被 subjected to 10 分钟的窒息性心脏骤停和复苏.
- 动物被分为接受100% O2 (CA-FiO2 1.0) 或30% O2 (CA-FiO2 0.3) 的组,并与假组 (假-FiO2 0.3) 进行比较.
- 肺湿干 (W/D) 体重比,血液气体参数 (包括AaDO2和p/f比),pH和乳酸盐水平在2小时后被测量.
主要成果:
- 与CA-FiO2 0.3和假装组相比,CA-FiO2 1.0组表现出明显更高的肺W/D比率 (p < 0.01).
- 与其他两组相比,CA-FiO2 1.0组的 AaDO2 显著升高 (p < 0.01).
- AaDO2与肺W/D比率 (r = 0.9415,p < 0.0001) 的相关性最强,其次是pH和p/f比率.
结论:
- 心脏骤停后的高氧症可以在老鼠中诱导肺.
- 气膜-动脉氧气差异 (AaDO2) 与肺的严重程度密切相关.
- AaDO2是一种潜在的最佳,非侵入性指标,用于评估CA后高氧性肺损伤.
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