Which of the Following Can Alter the Calibration of a Spirometer

question 5

Multiple Choice

Which of the following can alter the calibration of a spirometer that uses a pressure-differential pneumotachometer?

• A) Development of laminar flow in the pneumotachometer
• B) Allowing a healthy adult subject to exhale maximally through it
• C) Exhaustion of the water absorber (desiccant)
• D) Water droplet condensation in the resistive element

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