VEF1= volumen espiratorio forzado en el 1er segundo
FEV1= forced expiratory volume in 1 second

The FEV1 is a measure of effectiveness of asthma medications.

In Medicine, "promedio" is translated as "mean", specially when, as in this case, a mathematical value of change is implied.

Suerte vivi
Elena


In all cases, disease duration was less than 15 years; the absolute change (absolute variability, AV) in **forced expiratory volume in 1 second (FEV1)** on ERT was greater than 100 mL; and the increase in FEV1 on ERT was greater than 10%.


Fourteen patients with asthma participated in a double-blind, placebo-controlled, crossover study to assess the effect of 2 weeks of treatment with salmeterol MDI (50 microg b.d.) on lung mucociliary clearance. The 11 patients who completed the study (seven males, four females) had a **mean** +/- SE age of 50 +/- 4 years, % predicted **FEV1** of 74 +/- 8% and a tobacco consumption history...



Patients received on a single day four doses of formoterol: cumulative dose 6, 12, 24 and 48 microg from Airmax, or 12, 24, 48 and 96 microg from Aeroliser. The **mean FEV1** (SD) from baseline to 1 h after the final cumulative dose increased....