Welch Allyn CP 150 spirometry option - User Manual User Manual
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COPD.
Chronic obstructive pulmonary disease. Characterized by airflow obstruction that is primarily
caused by smoking. Examples include emphysema, chronic bronchitis, and asthmatic bronchitis.
curve.
A graphical display of spirometry data. During SVC testing, only one curve type is available:
volume/ time. During FVC testing, four curve types are available: volume/time, flow /volume, tidal
volume, and (on screen only) incentive.
effort.
A single spirometry maneuver, for example, one blow. A single test comprises multiple efforts.
See also best effort.
ERS.
European Respiratory Society.
ERV.
Expiratory reserve volume (in liters). The maximum volume that can be expired from the level of
the functional residual capacity (FRC). See also tidal breathing.
extrapolation.
The practice of applying a norm’s formula to a patient who doesn’t fit that norm’s demographics.
For example, if you were testing an 88-year-old man, and the primary (selected) norm were based
on males 85 or younger, the predicted values would be extrapolated values.
FEF50/FIF50.
The ratio of these two parameters. See FEF50 and FIF50.
FEF25.
Forced expiratory flow (in L/s) at 25% of FVC.
FEF50.
Forced expiratory flow (in L/s) at 50% of FVC.
FEF75.
Forced expiratory flow (in L/s) at 75% of FVC.
FEF85.
Forced expiratory flow (in L/s) at 85% of FVC.
FEF0.2-1.2.
Forced expiratory flow average (in L/s) between 0.2 and 1.2 liters of FVC.
FEF25-75.
Forced expiratory flow average (in L/s) during the middle half of FVC.
FEF75-85 (“late”
FEF).
Forced expiratory flow average (in L/s) between 75% and 85% of FVC.
FET.
Forced expiratory time (in seconds). The elapsed time from the beginning of expiration until a
specified percentage of FVC.
FEV0.5.
Forced expiratory volume (in liters) at 0.5 seconds.
FEV1.
Forced expiratory volume (in liters) at 1 second. An important parameter because it reflects the
severity of COPD.
FEV1/FEV6.
The ratio of these two parameters. See FEV1 and FEV6.
FEV2.
Forced expiratory volume (in liters) at 2 seconds.
FEV3.
Forced expiratory volume (in liters) at 3 seconds.
FEV5.
Forced expiratory volume (in liters) at 5 seconds.
FEV6.
Forced expiratory volume (in liters) at 6 seconds.
FEV0.5%.
FEV0.5 as % of FVC.
60 Glossary
CP 150 spirometry option