How often should a spirometer in continual use undergo volumetric ...

[notis]

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]

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.

[notis]

Wow, this really help

[daiying98]

Thanks for the timely response, appreciate it