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Set 4 Lung Volumesairway Resistanceand Gas Distribution Tests
Question 1
(Multiple Choice)
Free
A patient with pulmonary fibrosis has lung volumes measured using the open-circuit method and by plethysmography with the following results: 
Which of the following best explains these results?
Which of the following best explains these results?A) This is a normal pattern for the patient's diagnosis.
B) The FRC by N2 washout is erroneously low.
C) The VTG is erroneously low.
D) The predicted FRC is incorrect.
Answer
Question 2
(Multiple Choice)
Free
During an SBN2 test,an increased slope of phase III is:
A) Consistent with severe restrictive disease
B) Indicative of uneven distribution of gas within the lungs
C) Usually caused by an accelerated heart rate
D) Diagnostic of increased anatomic dead space
Answer
Question 3
(Multiple Choice)
Free
The reported value for VTG (FRCpleth)should be:
A) Averaged from three acceptable maneuvers
B) The largest value from three acceptable maneuvers
C) Reproducible within 1%
D) Measured with the subject panting at 5 Hz
Answer