当使用与呼吸回路连接的面罩相比,环境氧度丰富与风装置:一个模拟研究研究
Danielle B Horn1, Ken D Nguyen2, Joni M Maga3
1Pain Medicine, Jackson Memorial Hospital, Miami, USA.
Cureus
|September 29, 2025
概括
与麻醉机器的氧气混合器相比,31%的Venturi设备在麻醉期间显著增加了环境氧气度. 这增加了火灾风险,使得Venturi设备不适合用于头部和部手术.
科学领域:
- 麻醉学 麻醉学
- 生物医学工程 生物医学工程
- 患者安全 患者安全
背景情况:
- 麻醉学标准要求在头部/部手术的监控麻醉治疗期间将氧气 (O2) 限制在≤30%,以减轻火灾风险.
- 风口装置,虽然用于O2调节,但由于高流速,可以增加口罩附近的O2度.
- 较高的O2度,即使略高于室内空气,也会显著增加可燃性.
研究的目的:
- 为了比较31%的Venturi设备产生的环境氧气度与麻醉机器的O2混合器,设置为30%.
- 评估这些设备对手术布的麻醉和手术两侧氧气度的影响.
- 评估监控麻醉护理期间不同氧气输送方法对消防安全的影响.
主要方法:
- 使用的是连接到患者模拟器的面罩.
- 测试了两种输送氧气的方法:麻醉机O2混合器 (30%O2) 和31%Venturi设备.
- 在60分钟内,在手术窗 (以太屏幕) 两侧的多个位置测量了环境O2度.
主要成果:
- 与O2混合器相比,Venturi设备导致了明显更高的O2度增加:麻醉方面为2.22%,手术方面为0.80%.
- 在60分钟内,使用Venturi装置的平均O2度为22.99% (麻醉方面) 和21.72% (手术方面).
- 麻醉电路组显示最小的O2增加,度约为21.07% (麻醉方面) 和21.00% (手术方面).
结论:
- 一个31%的Venturi装置导致环境O2度临床上显著增加,增加了火灾风险.
- 不建议在潜在的点火源的头手术期间使用Venturi设备进行O2调节.
- 麻醉机制造商应将O2混合器集成到辅助气体出口中,以提高消防安全.
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