Calculate the airway resistance (Raw) using the information from the scalar below
a. 0.9 cm H2O/L/sec
b. 1.1 cm H2O/L/sec
c. 22.4 cm H2O/L/sec
d. 60 cm H2O/L/sec
ANS: C
Airway resistance (Raw) = Peak inspiratory pressure (PIP) – Plateau pressure (Pplateau)/flow (L/sec). PIP = 40 cm H2O; Pplateau = 25 cm H2O; flow = 40 L/min or 0.67 L/sec; Raw = 15/0.67 = 22.4 cm H2O/L/sec.
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