EasyOne Pro™ / EasyOne Pro™ LAB
73
Quality Messages and Quality Grades
FVC/FVL Quality Messages
Message
Criterion
Recommended action
Don’t hesitate …
Back-extrapolated volume greater
than 150 ml or 5% of FVC
whichever is greater (for age
6:
80 ml or 12.5% of FVC whichever
is greater)
The patient must exhale all air at
once and not exhale in short
bursts.
Blast out faster …
Time until peak flow greater than
160 ms
The patient must exhale more
explosively and as firmly and
quickly as possible.
Blow out longer …
Expiration time less than 2
seconds OR volume in the last 0.5
seconds of the expiration larger
than 100 ml
The patient stopped exhaling too
early. The patient must exhale still
further and force as much air as
possible out of his or her lungs.
Test Abrupt End!
FVC Test only: Expiration time less
than 2 seconds OR volume during
last 0.5 seconds >40 ml when
expiration time is <6 seconds OR
volume during last second >25 ml
when end-of-test was initiated by
an inspiration.
The patient stopped exhaling too
early. The patient must exhale still
further and force as much air as
possible out of his or her lungs.
Good effort, do next
…
Test meets above criteria.
Good trial. Only one to two more
good trials and the test is
complete.
Do not start too
early!
The time to peak flow (PEFT) is
less than 30 ms or flow detected
before sensor was initialized (Wait
until 'Start Maneuver …' is
displayed)
Instruct the patient to wait until
the baseline setting is finished
and the device signals that the
trial can start ('Start maneuver …')
Cough detected. Try
again…
A cough has been detected (PEF or
PIF >19 l/s)
Instruct the patient to avoid
coughing during the
measurement. Repeat the test.
Deeper breath …
FEV1 or FVC* not reproducible.
Difference with respect to best
test greater than 150 ml or 100 ml
if FVC is < 1.0L (for age
6: 100 ml
or 10% of FEV1 or FVC* whichever
is greater)
The test differs greatly from
previous tests. The patient can
inhale even more deeply and
exhale even more air.
