What range of pressure can be displayed on the user interface on the Covidien PB 840?

a. –20 to 100 cm H2O c. –20 to 150 cm H2O
b. –20 to 130 cm H2O d. –20 to 180 cm H2O

ANS: B
The available range for display of the peak inspiratory pressure, mean airway pressure, and plat-eau pressure is –20 to 130 cm H2O.