Multiple Choice
Which of the following techniques are used to measure residual volume?
1) Helium dilution
2) Body plethysmography
3) Nitrogen washout
4) Flow-volume loops
A) 2 and 4 only
B) 1, 2, and 3 only
C) 1, 2, 3, and 4
D) 1, 3, and 4 only
Correct Answer:

Verified
Correct Answer:
Verified
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