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Lung Disease & Respiratory Health Center

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Forced Expiratory Volume and Forced Vital Capacity - Topic Overview

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

Pneumonia: Reducing Your Risk

Getting pneumonia after surgery can be quite serious. According to the CDC, studies have suggested that pneumonia acquired in the hospital can be fatal as often as 33% of the time. So you need to make an effort to protect yourself. Follow your doctor's instructions about not eating or drinking before surgery. Usually, your doctor will tell you not to eat or drink after midnight the night before surgery. You must follow that advice. If you're going under anesthesia and still have food in...

Read the Pneumonia: Reducing Your Risk article > >

Forced expiratory volume and forced vital capacity are lung function tests that are measured during spirometry. Forced expiratory volume is the most important measurement of lung function. It is used to:

    WebMD Medical Reference from Healthwise

    Last Updated: September 09, 2014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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