ENG
13
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of 44
09360 Issue 2
Vitalograph micro - Instructions for Use
Note:
Single breath technique may also be performed.
5.2.2. FVC Test
To Perform an FVC test
:
1. Instruct the subject to breathe normally.
2. The subject should inhale completely and rapidly, with a
brief pause when lungs are completely full (≤ 2 secs).
3. Then exhale with maximal effort until no more air can
be expelled (when a plateau has been reached or forced
expiratory time (FET) reaches 15 seconds).
4. It is vital that the operator encourages the subject
to keep exhaling to ensure all air is expelled. The
operator should repeat instructions as necessary, with
enthusiasm.
5. Breathe in with maximal effort until completely full. The
manoeuvre is now complete, remove the mouthpiece
from the mouth.
6. Listen for two beeps. The device is now ready for the
next blow.
7. Repeat for a minimum of three manoeuvres, up to a
maximum of 20.
8. The results may be viewed as either a Volume/time (V/t)
or Flow/Volume (F/V)
by pressing the icons
on the side menu. These are not enabled during test.
9. The graph may be changed to a full screen graph
by using the zoom button
on the side menu.
Zoom in
to return to normal mode. These are not
enabled during test.
10. The results summary at the top of the screen shows the
FVC and FEV1 of the last blow.
11. The number of tests (for VC) or the number of usable
tests or bad blow ‘!’ indicator (for FVC) are shown next to
the last test results.
12. The best three tests are shown on the graph in order of
rank (best 1, 2, 3 etc.). A legend on the top of the graph
