A dry rolling-seal spirometer is checked by injecting 3-L volumes at different flows (high,medium,and low)with the following results: Which of the following explains these data?
A) An improperly functioning bacteria filter is in the circuit.
B) The rolling-seal is sticking or leaking.
C) The spirometer has not been calibrated.
D) The 3-L volume is being corrected to BTPS.

Question

A dry rolling-seal spirometer is checked by injecting 3-L volumes at different flows (high,medium,and low)with the following results:  Which of the following explains these data?
A) An improperly functioning bacteria filter is in the circuit. 
B) The rolling-seal is sticking or leaking. 
C) The spirometer has not been calibrated. 
D) The 3-L volume is being corrected to BTPS.

Quizplus · Accepted Answer

The inconsistent results at different flow rates suggest that the rolling-seal is either sticking or leaking, leading to inaccurate measurements.

A Dry Rolling-Seal Spirometer Is Checked by Injecting 3-L Volumes