Vitalograph Spirotrac Instructions for Use
IFU Part No.: 07402
Issue 22
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Page 41 of 78
DT_0006-15
TV
Tidal Volume (L)
IC
Inspiratory Capacity (L)
FEV
1
/HT2
Ratio of FEV
1
to Height in meters squared
RAWind
Airways Resistance Indirect
TPEF
Time to PEF (ms)
TEXT
Extrapolated time (ms).
EOTV
End of test volume (L)
FEV1/FIVC
Ratio of FEV
1
versus FIVC
FEV
1
/IVC
Ratio of FEV
1
versus IVC
FIV
1
/FIVC
Ratio of FIV
1
versus FIVC
FIV
1
/FVC
Ratio of FIV
1
versus FVC
V’I max (t) (L/s)
Maximum tidal breathing flow-rate
V’I max (FVC) (L/s)
Maximum inspiratory flow-rate
IFR
Inspiratory Flow Reserve (IFR)
FEF50/FIF50
Ratio of FEF50 versus FIF50
MVV
Maximum Voluntary Ventilation (L/min)
VT
Average tidal volume (L)
MVV Time
The duration of the MVV test
MVV Rate
The number of full breaths in the MVV test expressed as breaths/min
MIFR
Mean Inhalation Flow Rate (L/min)
IV
Inspiratory Volume (L/min)
IFT
Inspiratory Flow Time (s)
TPIF
Time to Peak Inspiratory Flow (ms)
BHT
BreathHold Time from the end of inspiratory to end of test (s)
TT0
Time to Lower Flow Threshold (ms)
TT1
Time to Upper Flow Threshold (ms)
CANISTER
ACTIVATION FLOW
The Flow at which the Canister Activation Occurred (L/min)
CANISTER
ACTIVATION VOLUME
The Volume at which the Canister Activation Occurred (L)
CANISTER
ACTIVATION TIME
The time at which the Canister Activation Occurred (s)
FEFmax
Forced Expiratory Flow
4.1.8 Test Quality Information
After every test manoeuvre, a quality control window displays which is intended to
increase or maintain maximum performance throughout a session. Two types of