Spirolab
Rev.1.8
Page 45 of 60
F = no acceptable test.
2nd case: POST bronchodilator test
A = two acceptable tests, the variation of the two highest FEV1 values is less than or equal
to 100 mL.
B = two acceptable tests, the variation of the two highest FEV1 values is between 100 and
200 mL.
C = two acceptable tests, the variation of the two highest FEV1 values is greater than 200
mL.
D = one acceptable test
F = no acceptable test
"Acceptable" means: a good start and satisfactory exhalation (in duration and flow)
To facilitate understanding where much information is available regarding the same test,
the
spirolab
device will only display the most significant data.
Vext and PEFT ERROR
If the extrapolated volume is :
For patients with age > 6 years
> 150 mL or > 5% of FVC
For patients with age < 6 years
> 80 mL or > 12.5% of FVC
PEFT (peak flow time) > 160 msec.
FET Error
If the FET is:
For patients with age < 10 years
FET < 2 sec
For patients with age > 10 years
FET < 6 sec
FLOW ERROR
If:
Flow > 100 mL in the last ½ second
Flow > 40 mL in the last ½ second
Between one test and the next, the
spirolab
device evaluates the repeatability of the
following parameters:
PEF
repeatable when the difference between the two furthest apart PEF values is ≤
10%;
FEV1
repeatable when the difference between the two furthest apart FEV1 values is ≤
150mL;
FVC
repeatable when the difference between the two furthest apart FVC values is ≤
150mL;
