Vyaire MicroLab Manuel D'utilisation page 23

Note: Patient efforts is acceptable when:
Patient made a maxium effort. Indicated
to the user by the breath rate being
displayed in green (>65 breaths per
minute).
Lasted a full 12 seconds manoeuvre.
Indicated to the user by a green line being
displayed – the patient should ideally
continue until the test is automatically
terminated at 15s.
Interruption ie. Did not cough.
Once the test has finished the display
will show current test (shown in black –
if more then one manoeuvre has been
performed then the best manoeuvre will
also be displayed in blue) the MVV rate,
the % variation between manoeuvres the
breath rate and an ATS quality warning for
the test session.
'Touch' Again to repeat the manoeuvre,
Reject to reject the current manoeuvre,
Results to display a list of indices,the
values obtained, % predicted where
applicable and also a quality statement
concerning the test session.
To meet the ATS quality criteria for a
Good blow the manoeuvre should last
15 seconds with a breath rate greater
than 65 breaths per minute. The ATS
reproducibility criterion is two manoeuvres
with a Good Blow and the MVV variability
between manoeuvres should not exceed
20%.
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