Evaluation of an innovative pediatric isolation(PI)bed using fluid dynamics simulation and aerosol isolation efficacy
作者机构：School of Public HealthGuangdong Pharmaceutical UniversityGuangzhouGuangdong 510310China State Key Laboratory of Respiratory DiseaseNational Clinical Research Center for Respiratory DiseaseGuangzhou Institute of Respiratory HealthFirst Affiliated Hospital of Guangzhou Medical UniversityGuangzhou Medical UniversityGuangzhouChina
出 版 物：《Building Simulation》 (建筑模拟（英文）)
年 卷 期：2021年第14卷第5期
页 面：1543-1552页
核心收录：
学科分类：0831[工学-生物医学工程（可授工学、理学、医学学位）] 08[工学]
基 金：supported by grants from the National Key Research and Development Program of China(2018YFC1200100,2018YFC1200103) Guangdong Medical Science and Technology Research Center Project(A2019460) Entrepreneurship Leadership Project in Guangzhou Development Zone of China(CY2018-003) Guangzhou Science and Technology Project(202008040002) Scientific Research Project of Guangdong Province Traditional Chinese Medicine Bureau(20201191) Innovative and Strong School Project of Guangdong Provincial Department of Education(2020KZDZX1122) Guangdong Science and Technology Project(2020B111106001) Foshan Science and Technology Innovation Project(2020001000416)
主 题：computational fluid dynamics(CFD) isolation bed particles speed nosocomial infections pediatrics
摘 要：Airborne transmission is an important mechanism of spread for both viruses and bacteria in hospitals,with nosocomial infections putting a great burden on public *** this study,we designed and manufactured a bed for pediatric clinic consultation rooms providing air isolation to protect patients and medical personnel from pathogen *** pediatric isolation bed has several primary efficiency filters and a high-efficiency particulate air filter in the bedside *** air circulation between inlet and outlet forms negative pressure to remove the patient s exhaled air timeously and effectively.A computational fluid dynamics model was used to calculate the speed of the airflow and the angle of *** this,we conducted purification experiments using cigarette smoke,Staphylococcus albus(***)and human adenovirus type 5(HAdV-5)to demonstrate the isolation *** results showed that the patient s head should be placed as close to the air inlet hood as possible,and an air intake wind speed of 0.86 m/s was *** isolation efficacy of the pediatric isolation bed was demonstrated by computational fluid dynamics *** isolation efficiency against cigarette smoke exceeded 91.8%,and against *** was greater than 99.8%,while the isolation efficiency against HAdV-5 was 100%.The pediatric isolation bed could be used where isolation wards are unavailable,such as in intensive care units and primary clinical settings,to control hospital acquired infections.
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