A patient with CHF is being mechanically ventilated. The patient's current PaCO2 = 28 mm Hg, and the ventilator set rate is 16 per minute. The desired PaCO2 for this patient is 40 mm Hg. To what should the set rate be changed?
a. 7/min
b. 11/min
c. 14/min
d. 18/min
Question 2
A patient with pneumonia and underlying COPD is being mechanically ventilated in the VC-CMV mode with VT 650 mL. The resulting PaCO2 is 62 mm Hg. What change should be made to the VT to obtain a desired PaCO2 of 50 mm Hg for this patient?
a. 400 mL
b. 800 mL
c. 1000 mL
d. 1200 mL
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