PFT Equipment Quality Control

Question 1

How often are volumes tested on PFT equipment?

Answer 1

Daily at the minimum

Question 2

How often are leaks tested on PFT equipment?

Answer 2

Daily at the min

Question 3

How often is flow linearity tested on PFT equipment?

Answer 3

Weekly at the min

Question 4

How often is volume linearity tested on PFT equipment?

Answer 4

Quarterly at the min

Question 5

How often is time adjusted on PFT equipment?

Answer 5

Quarterly at the min

Question 6

How often is software adjusted on PFT equipment?

Answer 6

Whenever new versions are available

Question 7

How is volume calibrated on PFT equipment?

Answer 7

Calibration check with 3L syringe.

• must fall within +/- 0.015 L or +/- 0.5% of full scale
• should be 3cmh2o constant pressure for 1 min

Question 8

How are leaks calibrated on PFT equipment?

Answer 8

3 cmH2O (0.3kpa) constant P for 1 min

Question 9

How is flow linearity calibrated on PFT equipment?

Answer 9

Test at least 3 different flow ranges (with 3 ml syringe)

• must fall within +/- 0.015 L or +/- 0.5% of full scale

Question 10

How is volume linearity calibrated on PFT equipment?

Answer 10

1L increments with calibrating syringe measured over entire volume range