Author Question: How often should a spirometer in continual use undergo volumetric calibration? a. Every 4 hr b. ... (Read 37 times)

notis · **on:** Jul 16, 2018

How often should a spirometer in continual use undergo volumetric calibration?

a. Every 4 hr
b. Every shift
c. At least daily
d. Weekly

Question 2

What is the American Thoracic Society standard for volumetric accuracy of spirometers?

a. 1 error, or within 10 ml of the refer-ence value
b. 3 error, or within 50 ml of the refer-ence value
c. 5 error, or within 100 ml of the refer-ence value
d. 10 error, or within 500 ml of the refer-ence value

Brummell1998 · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: C
For quality control, the standards include verifying volume accuracy with a 3.0-L calibration sy-ringe at least daily.

Answer to Question 2

ANS: B
When measuring the vital capacity, forced vital capacity, and forced expiratory volumes, a vol-ume-measuring spirometer should have a capacity of at least 8 L and should measure volumes with less than a 3 error or within 50 ml of a reference value, whichever is greater.