Quantitative Evaluation of the Transmission and Removal of Harmful Smoke Particles in the Operating Room: Full-Scale Experimental and Numerical Study

IF 4.3 2区 环境科学与生态学 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
Indoor air Pub Date : 2023-04-28 DOI:10.1155/2023/9669528
Zhijian Liu, Zheng Zhang, Jiabin Lv, Juntao Ma, G. Yao, Junzhou He, Guoqing Cao
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引用次数: 0

Abstract

A large amount of surgical smoke in electrosurgery seriously deteriorates the clean environment of the operating room and can potentially harm medical staff and patients. Exploring the distribution and removal of indoor particulate matter and selecting efficient ventilation patterns are effective ways to control harmful smoke. Therefore, in this study, we combined simulations and full-scale experiments to quantitatively explore the high-concentration spatial regions of particles and compared three ventilation patterns: vertical laminar airflow (VLAF), horizontal laminar airflow (HLAF), and hybrid ventilation, wherein unidirectional airflow (UDAF) was applied to the operating table along with peripheral mixing (UDAF + mixing). We found that simple laminar flow ventilation was significantly affected by the equipment layout and air change rate (air changes per hour; ACH), and the smoke particles were distributed in large amounts in the operating area and could not be removed completely. Conversely, hybrid ventilation can work effectively, and the optimal ACH is approximately 60, which can remove nearly 72% of smoke particles. The airflow distribution in the operating room is also an important factor affecting the distribution and removal of smoke particles. Therefore, medical staff should avoid prolonged exposure to areas with high particle concentrations and particle removal paths.
手术室中有害烟雾颗粒传输与去除的定量评价:全尺寸实验与数值研究
电外科手术中产生的大量手术烟雾严重破坏了手术室的清洁环境,对医护人员和患者都有潜在的危害。探索室内颗粒物的分布和去除,选择有效的通风方式是控制有害烟雾的有效途径。因此,在本研究中,我们将模拟与全尺寸实验相结合,定量探索颗粒的高浓度空间区域,并比较了垂直层流(VLAF)、水平层流(HLAF)和混合通风三种通风方式,其中单向气流(UDAF)应用于手术台上,外围混合(UDAF +混合)。我们发现简单层流通风受设备布置和换气次数(每小时换气次数;ACH),烟气颗粒在作业区域内大量分布,无法完全清除。相反,混合通风可以有效地工作,最佳ACH约为60,可以去除近72%的烟雾颗粒。手术室内的气流分布也是影响烟气颗粒分布和清除的重要因素。因此,医务人员应避免长时间接触有高浓度颗粒和颗粒去除路径的区域。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Indoor air
Indoor air 环境科学-工程:环境
CiteScore
10.80
自引率
10.30%
发文量
175
审稿时长
3 months
期刊介绍: The quality of the environment within buildings is a topic of major importance for public health. Indoor Air provides a location for reporting original research results in the broad area defined by the indoor environment of non-industrial buildings. An international journal with multidisciplinary content, Indoor Air publishes papers reflecting the broad categories of interest in this field: health effects; thermal comfort; monitoring and modelling; source characterization; ventilation and other environmental control techniques. The research results present the basic information to allow designers, building owners, and operators to provide a healthy and comfortable environment for building occupants, as well as giving medical practitioners information on how to deal with illnesses related to the indoor environment.
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