Dispersal of Respiratory Droplets With Open vs Closed Oxygen Delivery Masks

Nosocomial transmission of droplet-borne respiratory infections such as severe acute respiratory syndrome (SARS) may be influenced by the choice of oxygen face mask. A subject inhaled saline mist and exhaled through three oxygen masks to illustrate the pattern of dispersal of pulmonary gas. In two c...

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Bibliographic Details
Published inChest Vol. 125; no. 3; pp. 1155 - 1157
Main Authors Somogyi, Ron, Vesely, Alex E., Azami, Takafumi, Preiss, David, Fisher, Joseph, Correia, Joe, Fowler, Robert A.
Format Journal Article
LanguageEnglish
Published Elsevier Inc 01.03.2004
American College of Chest Physicians
Subjects
droplets
nosocomial
oxygen mask
oxygenation
severe acute respiratory syndrome
ventilation
nosocomial
oxygen mask
droplets
ventilation
SARS
oxygenation
severe acute respiratory syndrome
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Summary:Nosocomial transmission of droplet-borne respiratory infections such as severe acute respiratory syndrome (SARS) may be influenced by the choice of oxygen face mask. A subject inhaled saline mist and exhaled through three oxygen masks to illustrate the pattern of dispersal of pulmonary gas. In two commonly used masks, exhaled gas formed a plume emanating from the side vents, while a third mask with a valved manifold, which was modified by adding a respiratory filter, retained the droplets. Maintaining respiratory isolation during the administration of oxygen may reduce the risk of the nosocomial transmission of respiratory infections such as SARS.
ISSN:0012-3692
1931-3543
DOI:10.1378/chest.125.3.1155