A nonsmoking subject performs two DLCOsb maneuvers,and the following results are obtained: Test 1 24.3 ml CO/min/mm Hg
Test 2 18.7 ml CO/min/mm Hg
Which of the following is appropriate?
A) Reporting the largest value as the DLCO
B) Reporting the average of the two values
C) Performing an additional maneuver
D) Correcting the value from Test 2 for COHb

Question

Quizplus · Accepted Answer

The difference between the two DLCOsb values is significant (greater than 10%), indicating variability in the test performance or patient effort. Therefore, performing an additional maneuver is appropriate to ensure accuracy and consistency in the results.

A Nonsmoking Subject Performs Two DLCOsb Maneuvers,and the Following Results