What determines the patient's delivered tidal volume in all modes of bilevel positive-pressure ventilation?
a. IPAP
b. EPAP
c. The gradient between the IPAP and EPAP
d. Patient's respiratory rate
ANS: C
In all modes of bilevel positive-pressure ventilation, the patient's delivered VT depends on the gradient between the IPAP and EPAP, the inspiratory time, and the patient's inspiratory effort and lung characteristics.
Health Professions
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