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Definition of Forced expiratory volume

  • Medical Author:
    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

Forced expiratory volume: The volume of air that can be forced out taking a deep breath, an important measure of pulmonary function. The forced expiratory volume in the first second is the FEV1.

Reviewed on 12/11/2018

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