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RCP 160 Final Study Guide, questions with correct answers
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RCP 160 Final Study Guide, questions with correct answers
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RCP 160 Final Study GuideDuring mechanical ventilation of a patient with COPD, the PaCO2 = 58 mm Hg and the minute ventilation
= 5.5 L/min. The desired PaCO2 for this patient is 45 mm Hg. To what should the minute ventilation be changed?
a)
6.0 L/min
b)
6.6 L/min
c)
7.1 L/min
d)
8.0 L/mincorrect answerC. Desired vt= known paco2 x known vt / desired paco2
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 35 mm Hg. To what should the set rate be changed?
a)
11/min
b)
13/min
c)
14/min
d)
15/mincorrect answerB. 13/min Desired f = Known PaCO2 · Known f/Desired PaCO2
A patient with pneumonia and underlying COPD is being mechanically ventilated in the VC-CMV mode with VT 500 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)
550 mL
c)
620 mL
d)
800 mLcorrect answerC. 620 ml
Desired VT = Known PaCO2 · Known VT/Desired PaCO2
The average tidal volume range in an individual with no pulmonary problems is which of the following?
a)
4-5 mL/kg IBW
b)
6-8 mL/kg IBW
c)
8-10 mL/kg IBW
d)
12-15 mL/kg IBWcorrect answerB. 6-8 ml/kg IBW
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