How does proportional assist ventilation (PAV) differ from pressure support ventilation?
A. PAV provides a guaranteed tidal volume with every breath.
B. The inspiratory flow during PAV is constant despite the patient's effort.
C. The need for sedation and/or paralysis to achieve patient-ventilator synchrony is greater with PAV.
D. PAV unloads a greater percentage of the elastic and resistive burden of the respiratory system.
ANS: D
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