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Study Pack
Set 3 Diffusing Capacity Tests
Question 1
(Multiple Choice)
Free
If the He and CO analyzers used for a DLCOsb test are linear with respect to each other,the fractional concentration of CO at the beginning of the breath hold (FACO0)is equal to:
A) FAHe
B) FAHe/FIHe
C) FICO
D) logn FIHe
Answer
Question 2
(Multiple Choice)
Free
An adult male subject has the following measurements made: 
What DLCO value should be reported?
What DLCO value should be reported?A) 9.1 ml CO/min /mm Hg STPD
B) 10.6 ml CO/min/mm Hg STPD
C) 12.6 ml CO/min/mm Hg STPD
D) 13.3 ml CO/min/mm Hg STPD
Answer
Question 3
(Multiple Choice)
Free
The following DLCO data (reported in ml CO/min/mm Hg)are obtained from a subject: 
What should the technologist do next?
What should the technologist do next?A) Report the mean of all three trials.
B) Perform another maneuver.
C) Report the mean of the second and third trials.
D) Report the third trial only.
Answer