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An pt is on VC SIMV with a VT set at 9 ml/kg, a PEEP of 5, and a rate of 18. The pt has a total RR of 22 and a PIP of 20. If the blood gas comes back with a low CO2, what setting(s) COULD you decrease to fix the blood gas?
a. PIP
b. VT
c. PEEP
d. RR