使用二氧化碳监测量医院环境通风的量化 - - 一项多中心研究
N M Wilson1,2, C Calabria1, A Warren1
1Department of Anaesthesia and Critical Care, Royal Infirmary of Edinburgh, Edinburgh, UK.
Anaesthesia
|December 7, 2023
概括
医院的通风质量有很大的差异. 工作人员区域和普通病房经常显示通风不足,增加了空气传播风险. 重症监护室和手术室保持高通风标准,这表明二氧化碳监测可以指导改进.
科学领域:
- 环境健康 环境健康
- 医院基础设施 医院基础设施
- 传染病控制和控制传染病
背景情况:
- 随着COVID-19的流行,环境通风在减轻空气传播病原体的传播方面发挥了至关重要的作用.
- 目前的医院通风评估依赖于静态空气变化速率,而不是排气废气的动态测量.
- 二氧化碳监测是社区推的工具,用于评估通风的充分性.
研究的目的:
- 动态量化和评估医院通风的质量和分布.
- 研究人类居住,通风和二氧化碳水平之间的关系.
- 为了比较临床和非临床医院区域的通风质量.
主要方法:
- 使用非分散式红外二氧化碳监测器进行的两阶段前性观察研究.
- 第一个阶段:在受控条件下验证方法.
- 第二阶段:在苏格兰两家医院的32个临床和非临床区域对通风的评估,持续了8周 (2022年11月至12月),收集了127,680次测量.
主要成果:
- 在非临床领域,二氧化碳水平在14%的时间内超过800 ppm,而在临床领域则为7% (p < 0.001).
- 在非临床环境中,二氧化碳水平在ICU和病房中20%的时间都超过800 ppm,但在手术室中只有1% (p < 0.001).
- 在临床环境中,二氧化碳含量在病房中16%的时间>800 ppm,但在ICU和手术室中为0% (p < 0.001).
结论:
- 急性医疗/呼吸病房的员工休息室,办公室和临床区域经常表现出不充分的通风,可能会增加空气传播病原体传播风险.
- 在重症监护室 (ICU) 和手术室,通风质量始终很高.
- 二氧化碳监测提供了一种可行的方法来测量和指导医院环境通风的改进.
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