Service manual

IQmark Digital Spirometer Operation Manual
90
FEV
0.5
/ FIV
0.5
– Ratio of the volume of air expired in one-half second to the total volume of
air inspired in one-half second during the FV loop test.
PEF - Peak Expiratory Flow – Largest expiratory flow achieved with a maximally forced
effort from a position of maximal inspiration. Also known at PEFR (Rate) in Spirometry or
just PF (Peak Flow) in monitoring devices.
FIVC – Forced Inspiratory Vital Capacity – The volume of air inhaled from a position of full
expiration to full inspiration.
FIV
0.5
– Forced Inspiratory Volume at one-half second after the start of inspiration.
FIF
50%
– Forced Inspiratory Flow at 50 percent of inspiration.
PIF – Peak Inspiratory Flow – The maximum inspiratory flow rate measured during the force
inspiratory portion of the FV Loop.
Exp time – Total expiratory time for the forced expiratory maneuver.
V ext – Volume of air from the beginning of expiration to the zero point of the FVC due to
back extrapolation.
MVV – Maximal Voluntary Ventilation – The volume of air expired with continual maximal
expiration and inspiration measured over a 12 second duration. Volumes are then
extrapolated to one minute.
MTV – Mean Tidal Volume – The mean volume of air expired within the tidal breath during
the continual maximal expiration and inspiration measured over a 12 second duration.
Expressed in Liters/Breath.
RR – Respiration Rate – The respiration frequency (Breath/Minute) measured during a MVV
maneuver.
VC – Vital Capacity – The maximum volume of air exhaled from the point of maximal
inhalation or the maximal volume of air inhaled from a point of maximal exhalation can be
measured with a slow exhalation or inhalation, respectively. It is the volume change at the
mouth between the positions of full inspiration and complete expiration. Previously called
the “slow” vital capacity (SVC).
ERV – Expiration Reserve Volume – The volume of air that can be expired by a forceful
expiration after the end of a normal tidal expiration.
IRV – Inspiration Reserve Volume – The volume of air that can be inspired by a forceful
inspiration after the end of a full expiration.
TV – Tidal Volume – The volume of air inspired and expired with each normal breath.
Next
Back
Go To Table Of Contents