RPFT RPFT Equipment Calibration & Quality Control

Question 1

How often should a 3-liter calibration syringe be used to verify spirometer volume accuracy?

Accepted Answer

At least once daily before testing

Answer

Once per week

Answer

Only when a new patient arrives

Answer

Monthly by a certified technician

Question 2

What is the acceptable volume accuracy range for a spirometer calibration check using a 3-liter syringe?

Accepted Answer

Within ±3.5% or 65 mL

Answer

Within ±5% or 100 mL

Answer

Within ±10% or 200 mL

Answer

Exactly 3.000 L with no tolerance

Question 3

Which biological control method is used to track long-term spirometer performance trends in a PFT lab?

Accepted Answer

Testing a stable staff member and plotting control charts

Answer

Testing a calibration syringe at three different speeds

Answer

Running manufacturer-supplied electronic test signals

Answer

Comparing results across two different spirometers

Question 4

What does a linearity check of a spirometer assess?

Accepted Answer

Accuracy across the entire volume range, not just at 3 liters

Answer

The resistance of the mouthpiece filter

Answer

The response time of the flow transducer

Answer

Temperature compensation at different altitudes

Question 5

When should a body plethysmograph undergo leak testing?

Accepted Answer

Daily before patient testing

Answer

Only after a patient complaint

Answer

Annually by the manufacturer

Answer

Every six months

Question 6

Which gas is used as the reference for the thermal conductivity detector in a helium dilution FRC measurement system?

Accepted Answer

Helium

Answer

Nitrogen

Answer

Oxygen

Answer

Carbon dioxide