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DOI	10.1016/j.atmosenv.2021.118901
	Effects of operating room layout and ventilation system on ultrafine particle transport and deposition
	D'Alicandro A.C.; Mauro A.
发表日期	2022
ISSN	1352-2310
卷号	270
英文摘要	The main role of Heat Ventilation and Air Conditioning (HVAC) systems in Operating Rooms (ORs) is to ensure the desired thermo-hygrometric conditions and indoor air quality, minimizing the risk of air contamination. The main sources of contamination inside ORs, during surgical operations, are Colony-Forming Units (CFUs), fine particles and ultrafine particles (UFPs), which could cause surgical site infections or health issues for the medical staff. The present work aims at increasing the scientific knowledge concerning numerical modelling of the UFP transport and deposition in ORs, analysing the effectiveness of three different ventilation systems. A numerical methodology, validated in previous works, has been used to study UFP transport and deposition inside three actual ORs, two of them equipped with a Laminar AirFlow (LAF) system and one with a Turbulent Mixing Airflow (TMA) system. Both the LAF and the TMA systems effectively evacuate the UFPs, ensuring a particle deposition rate significantly lower than the evacuation rate. The installation of extraction grilles near the surgical table allows obtaining an improvement of UFP evacuation. Due to the not perfect symmetry of OR layouts and surgical wound position, a preferred way for UFP transport can be observed. The instrument table position should be chosen consequently, to reduce UFP, CFU and contaminant deposition. The UFP concentrations at surgical staff head height cannot be neglected for health-related risks. © 2021 Elsevier Ltd
关键词	Air quality Computational Fluid Dynamic (CFD)Operating rooms Particle deposition Particle transport Ultrafine particles
语种	英语
scopus关键词	Air; Air conditioning; Air quality; Deposition rates; Health risks; Indoor air pollution; Operating rooms; Particle separators; Surgery; Transport properties; Ventilation; Colony forming units; Computational fluid dynamic; Laminar airflow; Particle transport; Particle transport and depositions; Particles depositions; Turbulent mixing; Ultrafine particle; Ventilation and air conditioning; Ventilation systems; Computational fluid dynamics; deposition; installation; modeling; particle motion; pollutant; symmetry; ventilation; air quality; Article; colony forming unit; controlled study; extraction; human; laminar airflow; operating room personnel; surgical wound; ultrafine particulate matter; Air; Niger [West Africa]
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248100
作者单位	Dipartimento di Ingegneria, Università degli Studi di Napoli “Parthenope”, Centro Direzionale, Isola C4, Napoli, 80143, Italy
推荐引用方式 GB/T 7714	D'Alicandro A.C.,Mauro A.. Effects of operating room layout and ventilation system on ultrafine particle transport and deposition[J],2022,270.
APA	D'Alicandro A.C.,&Mauro A..(2022).Effects of operating room layout and ventilation system on ultrafine particle transport and deposition.ATMOSPHERIC ENVIRONMENT,270.
MLA	D'Alicandro A.C.,et al."Effects of operating room layout and ventilation system on ultrafine particle transport and deposition".ATMOSPHERIC ENVIRONMENT 270(2022).