PFT exam practice

Question 1

A galvanic fuel cell oxygen analyzer fails to reach the proper
reading when analyzing an FIO2 of 100%.The respiratory care
practitioner should:

A. Continue using the analyzer
B. Replace the analyzer with a new one
C. Change the fuel cell
D. Replace the battery

Answer 1

C. Change the fuel cell

Question 2

A patient is diagnosed with septic shock and has a fever of 105 degrees Fahrenheit. The RCP fails to make a temperature correction to the analyzer. How will this make the ABG analysis
inaccurate?

A. Lower CO2
B. Higher pH
C. Lower PO2
D. All of the above

Answer 2

D. All of the above

Question 3

A patient with kyphoscoliosis performs maximum inspiratory and expiratory maneuvers with the following results:MIP +110
MEP -160. The correct interpretation would be:

A. The results are normal
B. The results are invalid and should not be reported
C. The results are normal on inspiration and abnormal on
expiration
D. The results are normal on expiration and abnormal on
inspiration

Answer 3

B. The results are invalid and should not be reported

Question 4

A patient with pulmonary fibrosis has a compliance study
performed. Which of the following indicate that the esophageal balloon is placed correctly in the esophagus?

A. Cardiac pulsations are recorded by the pressure transducer
B. Inspiration causes a negative pressure deflection
C. Expiration causes a negative pressure deflection
D. No pressure change occurs during inspiration

Answer 4

B. Inspiration causes a negative pressure deflection

Question 5

All of the following statements are true concerning the Helium analyzer EXCEPT:

A. Measures percentage of He
B. Are safe to use with flammable gases
C. Are often found in pulmonary function equipment
D. Makes use of thermal conductivity

Answer 5

C. Are safe to use with flammable gases

Question 6

All of the following statements concerning blood-based
controls used in the ABG lab are correct EXCEPT:

A. They require refrigeration
B. They consist of human red blood cells
C. They must be ran every 8 hours
D. They are packaged in 2-3 ml ampoules

Answer 6

C. They must be ran every 8 hours

Question 7

At what lung level should a maximum inspiratory pressure
maneuver be performed?

A. Functional residual capacity
B. Residual volume
C. End-tidal inspiration
D. Total lung capacity

Answer 7

B. Residual volume

Question 8

Correct expressions for the relationship between respiratory
rate, tidal volume and minute ventilation include:

A. Rate = VE Vt
B. Vt = VE Rate
C. VE = Rate x Vt
D. All of the above

Answer 8

D. All of the above