DSI Buxco FinePointe - Fast Flow Volume

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Pulmonary Function Test • Publication 014181-001 Rev 02 • www.datasci.com ©2023 Data Sciences International
Fast Flow Volume
The FV test provides information about the dynamic lung properties. Dynamic lung properties are described by
the flow-volume relationship of the lung. The Flow-Volume curve shows the flow at a given expired volume. Since
the pressure across the lung is essentially constant during the acquisition of the flow-volume data, the flow value is
proportional to the conductance of the limiting airways at a given expired volume.
The FV Test produces the following parameters:
Parameter
Description
Units
IC
Inspiratory Capacity. Volume measured from the start of the test to TLC
mL
FVC
Forced Vital Capacity. Volume measured from TLC to the end of the test.
mL
FERV
Forced Expiratory Reserve Volume. The difference between FVC and IC.
mL
FEV20,
FEV50,
FEV100,
FEV200,
FEV300,
FEV400 and
FEV1(000)
Forced Expiratory Volume nn. Volume expired during the first 20
milliseconds of expiration. Same for the first 50, 100, 200, etc.
mL
PEF
The peak expiratory flow value during the expiration
mL/s
FEVpef
Expired volume up to the instant that PEF is achieved
mL
MMEF
Mean Mid Expiratory Flow. The average flow between 25% and 75% of
expired volume
mL/s
dVPEF
This number refers to the percent of FVC that remains in the lung when
the Peak Expiratory Flow is reached.
%
FEF75, FEF50,
FEF25 and FEF10
Forced expiratory flow at 75% (25% expired), 50, 25, and
10% of FVC
mL/s