Journal
CHEST
Volume 125, Issue 3, Pages 1155-1157Publisher
ELSEVIER SCIENCE BV
DOI: 10.1378/chest.125.3.1155
Keywords
droplets; nosocomial; oxygenation; oxygen mask; severe acute respiratory syndrome; ventilation
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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.
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