Calculate the effective static compliance (Cs) given the following information about a patient re-ceiving mechanical ventilation:

peak inspiratory pressure (PIP) is 56 cm H2O, plateau pressure (Pplateau) is 40 cm H2O, exhaled tidal volume (VT) is 650 mL, and positive end expiratory pressure (PEEP) is 10 cm H2O.
a. 14.1 mL/cm H2O
b. 16.3 mL/cm H2O
c. 21.7 mL/cm H2O
d. 40.6 mL/cm H2O


ANS: C
The formula for calculating effective static compliance is Cs = VT/(Pplateau − EEP).

Health Professions

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