AT-2plus User Guide Spirometry Supplement Page 25
Art. No. 2. 510339wa ©1999
AT-2plus User Guide Spirometry Supplement Page 25
Art. No. 2. 510339wa ©1999
Explanation of Measured Values
ERV Expiratory Reserve Volume. Possible further expiration starting from the normal expiration level.
IRV Inspiratory Reserve Volume. Possible further inspiration starting from the normal inspiration level.
TV Tidal Volume. Expirational and inspirational volumes during normal respiration.
SVC Slow Vital Capacity. Lung volume measured from a complete expiration following a deep inspiration.
MV Expired or Minute Ventilation. Volume of expired air in litres per minute measured over a minimum of one
minute.
MVV Maximum Voluntary Ventilation. Maximum volume of air which can be moved on expiration while breathing
as deeply and as rapidly as possible.
RR Respiration Rate.
FMFT Forced Mid-expiratory Flow Time. Time difference between the 25% and 75% points of the FVC.
FIVC Forced Inspiratory Vital Capacity. Inspiration volume achieved between a maximal expiration and a maximal
inspiration.
FIV
1.0
forced inspiratory air volume in litres measured in the first second.
FIV
1.0
/ FIVC forced inspiratory air volume measured in the first second as a percentage of forced inspiratory vital capacity.
FIV
1.0
/ FVC forced inspiratory air volume measured in the first second as a percentage of forced expiratory vital capacity.
PIF Peak Inspiratory Flow. Maximum inspiratory flow speed in litres / second.
MIF Maximum Inspiratory Flow. Maximum inspiratory flow in litres.
MIF
50%
flow speed by 50 % of the forced inspiratory vital capacity.
Explanation of Measured Values
ERV Expiratory Reserve Volume. Possible further expiration starting from the normal expiration level.
IRV Inspiratory Reserve Volume. Possible further inspiration starting from the normal inspiration level.
TV Tidal Volume. Expirational and inspirational volumes during normal respiration.
SVC Slow Vital Capacity. Lung volume measured from a complete expiration following a deep inspiration.
MV Expired or Minute Ventilation. Volume of expired air in litres per minute measured over a minimum of one
minute.
MVV Maximum Voluntary Ventilation. Maximum volume of air which can be moved on expiration while breathing
as deeply and as rapidly as possible.
RR Respiration Rate.
FMFT Forced Mid-expiratory Flow Time. Time difference between the 25% and 75% points of the FVC.
FIVC Forced Inspiratory Vital Capacity. Inspiration volume achieved between a maximal expiration and a maximal
inspiration.
FIV
1.0
forced inspiratory air volume in litres measured in the first second.
FIV
1.0
/ FIVC forced inspiratory air volume measured in the first second as a percentage of forced inspiratory vital capacity.
FIV
1.0
/ FVC forced inspiratory air volume measured in the first second as a percentage of forced expiratory vital capacity.
PIF Peak Inspiratory Flow. Maximum inspiratory flow speed in litres / second.
MIF Maximum Inspiratory Flow. Maximum inspiratory flow in litres.
MIF
50%
flow speed by 50 % of the forced inspiratory vital capacity.
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