Welch Allyn CardioPerfect Workstation SpiroPerfect Module - User Manual - Manual (Page 21)

CardioPerfect Workstation
SpiroPerfect Module
– User Manual
DIR 80012334 Ver. F 21 / 95
Figure 5.2 Spirometry General Tab
Setting
Description
Prediction Select the prediction to use. The list contains all supported predictions.
VC Parameter VC parameters, FEV1% formula:
The FEV1% formula determines the calculation method for the FEV1%
value, which affects the automatic interpretation. The variable part of this
formula is the denominator; the numerator is always the best effort’s FEV1
value.
To determine the way in which FEV1% is calculated, choose from these
options:

FVC (FEV1% = FEV1/FVC)

FIVC (FEV1% = FEV1/FIVC)

Max (FVC, FIVC, SVC*) (FEV1% = FEV1/FVC or FIVC or SVC, the
largest)
*Note: The SVC parameter is only included if Final Result is set to
Best composite.
Reversibility Reversibility is the percentage difference between pre-test and post-test
data. This measurement indicates the effect of medication on lung
function. Reversibility applies to each parameter separately.