Which of the following pulmonary function devices directly collect and measure gas volumes?
1) Water-sealed spirometer
2) Dry rolling-seal spirometer
3) Bellows spirometer
4) Pneumotachometer
A)3 and 4 only
B)1 and 2 only
C)1, 2, and 3 only
D)2, 3, and 4 only

Question

Quizplus · Accepted Answer

Water-sealed spirometers, dry rolling-seal spirometers, and bellows spirometers directly collect and measure gas volumes, while pneumotachometers measure flow rates, which can be integrated to estimate volume.

Which of the Following Pulmonary Function Devices Directly Collect and Measure