What Does FEV1 Stand For?

FEV1 stands for Forced Expiratory Volume In The First Second Lung Function

FEV1, or Forced Expiratory Volume in the First Second, is a key measure in pulmonary function testing that quantifies the volume of air a person can forcibly exhale during the first second of a prolonged exhalation. It is an important parameter used to assess lung function, diagnose respiratory conditions such as asthma and chronic obstructive pulmonary disease (COPD), and evaluate treatment efficacy. FEV1 values are often compared against normative data to identify potential respiratory issues and guide clinical decision-making.