Airflows around oxygen masks - A potential source of infection?

被引：60

作者：

Hui, David S.

Ip, Margaret

Tang, Julian W. ^{[1
]}

Wong, Alexandra L. N.

Chan, Matthew T. V.

Hall, Stephen D.

Chan, Paul K. S.

Sung, Joseph J. Y.

机构：

[1] Chinese Univ Hong Kong, Prince Wales Childrens Hosp, Dept Microbiol, Hong Kong, Hong Kong, Peoples R China

[2] Chinese Univ Hong Kong, Prince Wales Childrens Hosp, Dept Med & Therapeut, Hong Kong, Hong Kong, Peoples R China

[3] Chinese Univ Hong Kong, Prince Wales Childrens Hosp, Dept Anesthesia & Intens Care, Hong Kong, Hong Kong, Peoples R China

[4] Chinese Univ Hong Kong, Prince Wales Childrens Hosp, Ctr Emerging Infect Dis, Hong Kong, Hong Kong, Peoples R China

[5] Univ New S Wales, Sch Mech Engn, Sydney, NSW, Australia

来源：

CHEST | 2006年 / 130卷 / 03期

关键词：

aerosol; airborne; airflow; hospital-acquired; infection; infection control; nosocomial; oxygen mask; transmission; visualization;

D O I：

10.1378/chest.130.3.822

中图分类号：

R4 [临床医学];

学科分类号：

1002 ; 100602 ;

摘要：

Patients with respiratory infections often require the use of supplemental oxygen via oxygen masks, which, in the hospital, may become sources of aerosolized infectious pathogens. To assess this risk, a human lung model (respiration rate, 12 breaths/min) was designed to test the potential for a simple oxygen mask at a common setting (4 L/min) to disperse potentially infectious exhaled air into the surrounding area. A laser sheet was used to illuminate the exhaled air from the mask, which contained fine tracer smoke particles. An analysis of captured digital images showed that the exhaled air at the peak of simulated exhalation reached a distance of approximately 0.40 m.

引用

页码：822 / 826

页数：5

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