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Author Question: A patient with CHF is being mechanically ventilated. The patient's current PaCO2 = 28 mm Hg, and the ... (Read 109 times)

Arii_bell

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on: Jul 16, 2018
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


k.lashomb

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: B
Desired f Known Pa CO2 Known f /Desired Pa CO2

Answer to Question 2

ANS: B
Desired VT Known PaCO2 Known VT / Desired PaCO2


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