Nlhep Quality Checks - Vyaire Micro 1 Mode D'emploi

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NLHEP Quality Checks

In order for the interpretation to be displayed a manoeuvre must pass
a set of enhanced quality checks. After the patient has performed
a poor quality manoeuvre, one of the three following messages will
appear:
Message
Don't
hesitate
Blast out
faster
Blow out
longer
Once an acceptable manoeuvre has been performed, the following
consistency checks will also be applied to subsequent manoeuvres
Blast out
harder
Deeper
breath
Criteria
Back-extrapolated volume
(BEV) greater than
150 mL
Time until peak flow
(PEFT) greater than 120
msec
Expiration time less than 6
seconds or volume
accumulation has not
dropped below 100 mL per
0.5 seconds
Peak flow not
reproducible. The best
previous manoeuvres do
not match within 1.0 L/sec
indicating that the patient
is giving an inconsistent
effort.
FEV1 or FEV6 not
reproducible. Difference
with respect to best test
greater than 150 mL
Recommended action
The patient should
blast out the air more
quickly and evenly and
without hesitation at
the beginning of the
manoeuvre
The patient must
exhale more explosively
at the beginning of the
manoeuvre
The patient stopped
exhaling too early. The
patient must exhale
until their lungs are
completely empty.
The patient must give
their maximum effort
for each manoeuvre
The patient must inhale
until their lungs are
completely full before
each manoeuvre
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