Welch Allyn CP 200 Spirometry Option - User Manual - Manual (Page 82)

78 Glossary Welch Allyn CP 200 Spirometry Option
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 .
FEV1/FVC. See FEV1% .
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.