Vitalograph Spirotrac Instructions for Use
IFU Part No.: 07402
Issue 22
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Page 40 of 78 DT_0006-15
Ratio of FEV
1
versus the largest VC from either VC or FVC manoeuvre
Ratio of Forced Expiratory Volume after n second(s) (L) versus VC
Ratio of FEV
1
versus FEV6
Peak expiratory flow (L/sec or L/min)
Mean forced expiratory flow in the volume interval between 0.2 L and 1.2 L
of the test (L/sec)
Maximal mid expiratory flow (L/sec): the mean FEF in the time interval
between 25% and 75% of the FVC
Ratio of FEV25-75 versus FVC
Forced late expiratory flow (L/sec): the mean FEF in the time interval
between 75% and 85% of the FVC
Forced expiratory flow at 25% of the FVC (L/sec)
Forced expiratory flow at 50% of the FVC (L/sec)
Forced expiratory flow at 75% of the FVC (L/sec)
Forced inspiratory vital capacity (L)
Forced inspiratory volume after 1 second (L)
Peak inspiratory flow (L/sec or L/min)
Forced inspiratory flow at 25% of the FVC (L/sec) or FIVC, whichever is
greater
Forced inspiratory flow at 50% of the FVC (L/sec) or FIVC, whichever is
greater
Forced inspiratory flow at 75% of the FVC (L/sec) or FIVC, whichever is
greater
Ratio of FIF50 versus FEF50
Maximum voluntary ventilation indirectly calculated from the FEV (L/min). It
is the measured FEV1 values * 37.5
Forced mid-expiratory flow time (s)
Forced expiratory time (s)
Back extrapolated volume (L)
Functional residual capacity (L)
Inspiratory reserve volume (L)
Expiratory reserve volume (L)
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