不同的呼气对CO2再呼吸和在非侵入性通风过程中通风器性能的影响
Xinyu Li1, Bing Dai1, Chengguang Zhou2
1Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China.
与其他呼气相比,通风口罩在非侵入性通风 (NIV) 过程中显著减少了二氧化碳 (CO2) 重新呼吸. 不同的门影响了通风器的性能,特别是高原门,需要进一步的临床研究.
科学领域:
- 呼吸系统护理 呼吸系统护理
- 生物医学工程 生物医学工程
- 肺部医学 肺部医学
背景情况:
- 非侵入性通风 (NIV) 对于通过改善氧化和减少二氧化碳 (CO2) 保留来管理呼吸衰竭至关重要.
- 不同的呼气设计对二氧化碳再呼吸和NIV中的通风机性能的影响仍然不清楚.
研究的目的:
- 为了评估不同呼气对NIV期间二氧化碳再呼吸的影响.
- 评估这些门如何影响通风机性能参数.
主要方法:
- 三个具有单肢电路的NIV设备 (V60,Flexo,Stellar150) 用四个呼气 (单弧,低声旋转,平原,面罩) 进行了测试.
- 肺部模拟器被用来注入二氧化碳,保持最终呼气二氧化碳的80 mmHg.
- 记录了二氧化碳再呼吸量 (CO2REB) 和通风器性能指标.
主要成果:
- 与电路定位门 (17.7818.51毫升/呼吸) 相比,面膜门的CO2REB显著降低 (14.26 ± 0.92毫升/呼吸).
- 高原排气显示,一些设备的通风器性能 (触发,控制) 降低了.
- 在所有通风器的门中观察到超过10%的潮体积差异.
结论:
- 与电路定位相比,通风口罩在NIV期间最大限度地减少CO2再呼吸方面优越.
- 呼气类型显著影响NIV性能,平原具有特殊的限制.
- 这些基准研究结果的临床验证是必不可少的.
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