Droplet Generation due to Two Health Care Procedures - A Preliminary Study
Respiratory infections could be spread via exposure to droplets not only from expiratory activities such as talking, coughing and sneezing, and but also from aerosol-generating health care procedures. Droplet sizes predominately determine the times they could remain airborne, the possibility of spread of infectious diseases by large droplets, and thus the strategies for controlling the infections. There has not been any data on the number and sizes of droplets generated in aerosol-generating health care procedures. Experiments were thus carded out to characterize droplets generated in two aerosolgenerating health care procedures, i.e. taking nasopharyngeal aspirates and nebulizer therapy. It was found that taking nasopharyngeal aspirates could stimulate coughing and generate large droplets. Nebulizers could generate a large volume of fine droplets ranging from 0.3-20 μm which could escape from the holes in the nebulizers facemask.
Droplet Aerosol-generating Procedure Infection transmission
Xiaojian Xie Yuguo Li Hequan Sun Li Liu
School of Power Engineering,Nanjing Normal University,Nanjing,China Department of Mechanical Engineering,The University of Hong Kong,Pokfulam Road,Hong Kong SAR
国际会议
The 6th International Symposium on Heating,Ventilating and Air Conditioning(第六届国际暖通空调学术会议)
南京
英文
1183-1191
2009-11-06（万方平台首次上网日期，不代表论文的发表时间）