In which mode of ventilatory support does the patient breathe spontaneously at an elevated air-way pressure, with short, intermittent decreases in pressure to a lower level?
a. Volume-assured pressure-supported venti-lation
b. Pressure-controlled inverse ratio ventila-tion
c. Bilevel positive airway pressure
d. Airway pressure-release ventilation
ANS: D
A mode related to PC-IRV is APRV, in which the patient breathes spontaneously throughout periods of high and low applied continuous positive airway pressure.
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