The inspiratory and expiratory flow sensors are reading a base flow of 5 L/min. The flow trigger is set to 2 L/min. The expiratory flow sensor must read what flow to trigger inspiration?
a. 1 L/min
b. 2 L/min
c. 3 L/min
d. 4 L/min
ANS: C
Base flow minus flow trigger setting is equal to the flow needed to be sensed at the expiratory flow sensor to trigger inspiration.
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