A dual control mode provides pressure-limited ventilation with volume delivery targeted for every breath. If the desired volume is not met the ventilator will volume cycle. This describes which of the following ventilator modes?
a. Airway pressure release ventilation (APRV)
b. Pressure augmentation (Paug)
c. MMV
d. Pressure-regulated volume control (PRVC)
ANS: B
The pressure augmentation mode is a dual control mode that provides pressure-limited ventilation with volume delivery targeted for every breath. Each breath is flow cycled when the target vol-ume is reached. If the guaranteed volume is not achieved before flow drops to the set level, the ventilator maintains the flow at the set value until the volume is delivered, and at that point the ventilator volume cycles. Pressure-regulated volume control (PRVC) is similar in that it also tar-gets pressure and guarantees volume; however, when the set volume is not achieved the ventila-tor will incrementally increase pressure to achieve the volume.
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