Which of the following modes is used for noninvasive positive-pressure ventilation?
a. Pressure-support ventilation c. Continuous positive airway pressure
b. Proportional assist ventilation d. Bilevel positive airway pressure
ANS: D
Bilevel positive airway pressure is similar to continuous positive airway pressure in that both breath delivery techniques provide positive pressure during inspiration and expiration. With bi-level positive airway pressure, the inspiratory positive airway pressure is higher than the expira-tory positive airway pressure. Because bilevel positive airway pressure can be either patient trig-gered or time triggered, it can be used in the hospital setting for noninvasive ventilation.
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