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FIF
25-75
Forced inspiratory flow at 25% of vital capacity — synonymous
with MIF
75
L/s
FIV
1
/FIVC
The ratio of FIV
1
to FIVC
--
R
50
(FEF
50
/FIF
50
)
The ratio of flow at 50% of expiration and flow at 50% of
inspiration — synonymous with FEF
50
/FIF
50
--
VC
Vital capacity, from slow expiration
L
VC
in
Inspiratory vital capacity, from slow inspiration
L
VC
ex
Expiratory vital capacity, from slow expiration
L
ERV
Expiratory reserve volume
L
IRV
Inspiratory reserve volume
L
IC
Inspiratory capacity from end of tidal breathing
L
Rf
Respiratory frequency
1/min
VT
Tidal Volume
L
MVV
Maximum voluntary ventilation
L/min
MVV
6
Maximum plat voluntary ventilation for 6 seconds
L/min
MVV
time
Duration of the trial in seconds
s
The recommended number of trials per spirometry session is 3, however, the user may
perform up to 8 trials. The best values obtained from the spirometry tests performed in one
session are displayed on the app interface. Users and healthcare professionals have the
option to view the results of each spirometry trial performed in a spirometry session
separately.
The device also provides a reference value (obtained from large epidemiological studies)
based on the patient’s height, weight, age, sex and ethnicity. Test results from spirometry
tests are compared to the reference value and displayed as a percent predictive value
indicator of the patient’s respiratory health. The patient’s personal best value for a spirometry
session should be discussed with them for medical interpretation.
⚠
Caution:
Interpretation of spirometry results or diagnosis of medical conditions, if any, is
to be made by a physician or allied health care professional with sufficient training in the
performance and interpretation of spirometry.
First Pub. Date: 24.09.2018
R.9-1 / 10.03.2020
