Forced Expiratory Volume in one second – the volume of air that a person can breathe out in the first second of a forced expiration. This volume is reduced in patients with blockages of the airways in diseases such as asthma or COPD and provides a commonly-used measure of the extent of these blockages
Forced Expiratory Vital Capacity in one second
the amount of air exhaled in the first second following a deep breath, an important measure of lung function; FEV1 is the measure commonly referred to in cystic fibrosis (CF) care to describe lung function.
Forced Expiratory Volume. The total amount of air that can be breathed out of the lungs in one second. See FVC (Forced Vital Capacity)
Forced Expired Volume in 1 sec
Forced Expiratory Volume in 1 second, a measurement by a spirometer of the amount of air the lungs can hold.
See forced expiratory volume in one second
Forced Expiratory Volume in the first second. The volume of air that can be forced out in one second after taking a deep breath, an important measure of pulmonary function.