A pressure-support breath on a CareFusion V.I.P. Bird delivers 230 mL, and the peak inspiratory flow is 18 L/min. This breath will flow-cycle at _____ L/min
a. 0.9 c. 3.6
b. 1.8 d. 4.5
ANS: D
For delivered volumes greater than 200 mL, the flow cycle value is 25% of peak flow. Therefore, 25% ? 18 L/min = 4.5 L/min.
Health Professions
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