Multiple injections from a 3-L syringe into a flow-based spirometer produce an average reading of 2.92 L.This value indicates:
A) The spirometer has a leak.
B) The spirometer meets ATS accuracy requirements.
C) Excessive flows were used for calibration.
D) The spirometer should not be used for pediatric patients.

Question

Quizplus · Accepted Answer

The average reading of 2.92 L indicates that the spirometer meets the ATS (American Thoracic Society) accuracy requirements, as the measured volume is within a range of +/- 3% or 50 ml, whichever is greater, of the known or reference volume. A leak in the spirometer would result in a lower reading, excessive flows during calibration would not affect the accuracy of the spirometer, and the Spirometer's appropriateness for pediatric patients cannot be determined from this information.

Multiple Injections from a 3-L Syringe into a Flow-Based Spirometer