In the figure, the pressure-time curve that represents pressure-controlled intermittent mandatory ventilation plus pressure support is which of the following?
a. A c. C
b. B d. D
ANS: C
Graph C shows two pressure-limited breaths at two different pressures. The higher pressure is the pressure-limited ventilator breath, and the lower pressure is the pressure-limited spontaneous breath (or pressure-supported breath). Graph A shows volume-controlled continuous mandatory ventilation, graph B shows airway pressure-release ventilation, and graph D shows vol-ume-controlled intermittent mandatory ventilation plus pressure support.
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