QUESTION: 41

Which of the following may cause a reduction in end-tidal CO2?

Increased VD/VTratio
Anxiety-induced hyperventilation
Exercise below the anaerobic threshold
Eating a high-protein diet

Answer(s): B

QUESTION: 42

A comparison of two techniques for measuring Rawis shown below:

Which of the following should a pulmonary function technologist conclude?

Subject 1 panted too forcefully.
The system was calibrated for quiet breathing.
Subjects 1 and 2 both have reactive airways.
Results are consistent with the two methodologies.

Answer(s): D

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QUESTION: 43

A patient's vital capacity is slightly reduced, the FEWFVC is normal, and the uncorrected DLco is increased. Which of the following is the most likely diagnosis?

diffuse pulmonary fibrosis
diaphragmatic hemiparesis
kyphoscoliosis
polycythemia vera

Answer(s): D

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While performing duplicate blood gas analyses, a pulmonary function technologist notes that the second instrument gives consistently higher values forPaCO2and PaO2. Which of the following is the most probable cause of higher readings from the second instrument?

The sample chamber temperature is greater than 37° C
An excessive delay occurredbetween running the two samples
The PO2and PCO2electrodemembranes have protein build-up
The sample chamber has a bacterial contaminate

Answer(s): A

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QUESTION: 41

QUESTION: 42

QUESTION: 43

QUESTION: 44