Vitalograph In2itive User Manual
Cat. No. 07514
Issue 5
Page 25 of 45 DT_0006-6
The following list supplies definitions of the parameters:
Parameter
Definition
VC
Vital capacity (L)
IVC
Inspiratory vital capacity (L)
FIVC
Forced inspiratory vital capacity (L)
FVC
Forced vital capacity (L)
FEV.5
Forced expiratory volume after 0.5 seconds (L)
FEV.75
Forced expiratory volume after 0.75 seconds (L)
FEV1
Forced expiratory volume after 1 second (L)
FEV3
Forced expiratory volume after 3 seconds (L)
FEV6
Forced expiratory volume after 6 seconds (L)
PEF L/s
Peak expiratory flow (L/sec)
PEF L/min
Peak expiratory flow (L/min)
FEF0.2-1.2
(F02-12)
Mean forced expiratory flow in the volume interval
between 0.2 and 1.2 L of the test (L/sec)
FEF 25-75
(F2575)
Maximal mid expiratory flow: the mean FEF in the
time interval between 25% and 75% of the FVC
(L/sec)
FEF 75-85
(F7585)
Forced late expiratory flow: the mean FEF in the time
interval between 75% and 85% of the FVC (L/sec)
FEF 25
Forced expiratory flow at 25% of the FVC (L/sec)
FEF 50
Forced expiratory flow at 50% of the FVC (L/sec)
FEF 75
Forced expiratory flow at 75% of the FVC (L/sec)
FIV1
Forced inspiratory volume after 1 second (L)
PIF L/s
Peak inspiratory flow (L/sec)
FIF 25
Forced inspiratory flow at 25% of the FVC (L/sec)
FIF 50
Forced inspiratory flow at 50% of the FVC (L/sec)
FIF 75
Forced inspiratory flow at 75% of the FVC (L/sec)
MVVind
Maximum voluntary ventilation indirectly calculated
from the FEV1 (L/min)
FMFT
Forced mid-expiratory flow time (sec)
FET
Forced expiratory time (sec)
Vext
Extrapolated volume (L)
FRC
Functional residual capacity (L)
TV
Tidal volume (L)
RV
Residual volume (L)
TLC
Total lung capacity (L)
IRV
Inspiratory reserve volume (L)
ERV
Expiratory reserve volume (L)
