Vitalograph copd-6 BT - Page 7

7. Instruct the subject not to block the mouthpiece with
tongue or teeth. A ‘spitting’ action will give false readings.
8. To view the result (the best values in the session), press
the button.
9. The COPD Classication shows on the right-hand arrow.
• Green is NORMAL, negative for COPD. No need to refer
this subject for spirometry.
• Any one of the blue zones, I, II, III or IV are not normal.
This subject should be referred for spirometry.
10. The Obstructive Index (OI) shows on the left-hand arrow.
• 0 - Green is NORMAL.
• 1, 2 or 3 – Yellow, orange or red are not normal. Refer for
spirometry, but this is unlikely to be COPD.
• Note:If the right hand (COPD) arrow is not green, the left
hand (OI) arrow will also not be green.
11. This is the end of the test, but if desired some test
parameters may be viewed.
12. Following each blow and at the end of the test session, the
FEV1 value displays. Below that is the FEV1 % Predicted
results for that blow, or for the best in session if the
button has been pressed. Pressing again will
toggle between best and last blow.
13. Pressing the button shows the FEV6 and FEV6 %
Predicted results.
14. Pressing the button again shows the FEV1/FEV6 and
FEV1/FEV6 % Predicted results.
15. Pressing the button for a nal time shows the estimated
Lung Age. ( )
Notes on testing:
1. During testing, an exclamation mark( ! ) indicates a poor-
quality blow and the user should blow again. Reasons for
poor quality are;
• Slow Start of test: Vext (extrapolated volume) is > 5% or
150mL of FEV6
• Cough detected.
2. In the event that a test is < 3 seconds duration and has an