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(Chest. 1969;55:115-118.)
© 1969 American College of Chest Physicians

Effects of Airway Obstruction on Respirator Function in a Lung Analogue

Harold Keltz M.D., F.C.C.P.1; Saul Kaplan M.D.1; and Daniel J. Stone M.D.1

1 Respiration Laboratory of the Veterans Administration Hospital, Bronx, New York

The addition of airway obstruction to a model lung analogue resulted in a decrease in flow rate and tidal volume delivered to the analogue. Tidal volume could be maintained with the volume- and pressure-cycled respirator by an increase in airway pressure and the inspiratory flow time. These variables cannot be modified in the tank respirator, so that a marked decrease in tidal volume occurs in the presence of airway obstruction.






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Copyright © 1969 by the American College of Chest Physicians.