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

Author:

Liu Zhijian1ORCID,Zhang Zheng1ORCID,Lv Jiabin1,Ma Juntao1,Yao Guangpeng1,He Junzhou1,Cao Guoqing2

Affiliation:

1. Department of Power Engineering, North China Electric Power University, Baoding, Hebei 071003, China

2. Institute of Building Environment and Energy, China Academy of Building Research, Beijing 100013, China

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.

Funder

Fundamental Research Funds for the Central Universities

Publisher

Hindawi Limited

Subject

Public Health, Environmental and Occupational Health,Building and Construction,Environmental Engineering

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