Forced expiratory volume (FEV) measures how much air a person can exhale during a forced breath. The amount of air exhaled may be measured during the first (FEV1), second (FEV2), and/or third seconds (FEV3) of the forced breath.
Forced vital capacity (FVC) is the total amount of air exhaled during the FEV test.
Forced expiratory volume and forcedvital capacityare lung function tests that are measured duringspirometry. Forced expiratory volume is the most important measurement of lung function. It is used to:
Primary Medical Reviewer E. Gregory Thompson, MD - Internal Medicine
Adam Husney, MD - Family Medicine
Specialist Medical Reviewer Elizabeth T. Russo, MD - Internal Medicine
Current as ofDecember 6, 2017
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