What is the recommended response to a drop in PaO2 when the PEEP level is reduced in a me-chanically ventilated patient?

a. Increase the FiO2.
b. Return the PEEP to the previous level.
c. Increase the rate of mechanical breaths.
d. Do nothing.

ANS: B
If the PaO2 decreases after PEEP is decreased the PEEP level should be returned to its prior set-ting.