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.
Recommended Related to Lung Disease/Respiratory Problems
It is possible that the main title of the report Cystic Fibrosis is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.
Forced expiratory volume and forced
vital capacity are lung function tests that are
spirometry. Forced expiratory volume is the most
important measurement of lung function. It is used to:
well medicines used to improve breathing are working.
lung disease is getting worse. Decreases in the FEV1 value may mean the
lung disease is getting worse.
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This information is produced and provided by the National
Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National
Institute via the Internet web site at http://
.gov or call 1-800-4-CANCER.
WebMD Medical Reference from Healthwise
November 28, 2012
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