The respiratory system compliance of a patient receiving mechanical ventilation when the re-turned tidal volume is 650 mL, the static pressure is 35 cm H2O, and the positive end-expiratory pressure is 8 cm H2O is _____ mL/cm H2O
a. 0.04 c. 53.9
b. 18.6 d. 24
ANS: D
Respiratory system compliance can be determined by dividing the tidal volume by the Pplateau – baseline Cstat = 650 ÷ (35 – 8) = 650 ÷ 27 = 24 mL/cm H2O.
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