What is the flow rate necessary to deliver a tidal volume (VT) of 600 mL, with a constant wave-form, at a respiratory rate of 15 breaths/min with an I:E of 1:4?
a. 36 L/min
b. 40 L/min
c. 45 L/min
d. 60 L/min
ANS: C
Total Cycle Time (TCT) = 60 sec/f; Inspiratory Time (TI) = TCT/Inspired (I) + Expired (E); Flow rate = Tidal Volume (VT)/Inspiratory Time (TI).
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