使用通风器和普通全面罩补偿口罩泄漏的通风技术的比较:一项实验室研究
Shujie Liu1, Ran Dong1, Siyi Xiong1,2
1Department of Anesthesiology, The First Affiliated Hospital of Harbin Medical University, Harbin, China.
Heliyon
|October 23, 2023
概括
选择正确的呼吸机设置是有效的非侵入性通风 (NIV) 的关键. 压力控制通风 (PCV) 使用轮通风器和10 L/min的氧气流量最好补偿口罩泄漏.
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
- 机械通风机械通风机械通风
背景情况:
- 非侵入性通风 (NIV) 经常在输出管期间和之后使用.
- 优化NIV策略来管理口罩泄漏对于有效的通风至关重要.
- 这项研究比较了手术室通风器系统用于NIV口罩泄漏补偿.
研究的目的:
- 确定在NIV期间补偿口罩泄漏的最佳策略.
- 为了比较通常使用的手术室通风系统与普通面罩的性能.
- 为了确定最好的通风器设置,在存在泄漏时有效的NIV.
主要方法:
- 在肺模型上测试了四个手术室通风系统.
- 评估的通风模式包括压力控制通风 (PCV),体积控制通风 (VCV) 和自动流 (VAF).
- 模拟的口罩泄漏水平 (0至>40L/分钟) 和氧气流速 (10-26L/分钟) 用于测量过期的潮体积和峰值吸气压力.
主要成果:
- 压力控制通风 (PCV) 在所有通风器中始终产生比VCV和VAF更高的过期潮体积 (Vte).
- 在PCV模式下,所有经过测试的通风机都在泄漏级别II实现了足够的Vte.
- 增加氧气流量显著增加了实际的口罩泄漏,而更高的预设压力则放大了预设和实际的峰值吸气压力之间的差异.
结论:
- 对于带着口罩的NIV,采用轮发电机的通风机是最好的.
- 压力控制通风 (PCV) 是推的通风模式.
- 氧气流量应设置为10L/分钟或最大可用的流量,以有效地管理泄漏.
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