What is the maximum tidal volume available for a time-triggered, pressure-limited, time-cycled infant ventilator with a set inspiratory time of 0.5 second and a set flow rate of 12 L/min?
a. 36 mL c. 240 mL
b. 100 mL d. 250 mL
ANS: B
Tidal volume = [Inspiratory time (seconds) ? Flow (L/min)] ÷ 60 = [0.5 ? 12 L/min] ÷ 60 = 0.1 L, or 100 mL.
Health Professions
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