Overview of Tests of Pulmonary Function

ByKaren L. Wood, MD, Grant Medical Center, Ohio Health
Reviewed/Revised Apr 2024
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    Pulmonary function tests provide measures of airflow, lung volumes, gas exchange, response to bronchodilators, and respiratory muscle function.

    Basic pulmonary function tests available in the ambulatory setting include

    • Spirometry

    • Pulse oximetry

    Spirometry and pulse oximetry provide physiologic measures of pulmonary function and can be used to quickly narrow a differential diagnosis and suggest a subsequent strategy of additional testing or therapy. More complicated testing includes

    These tests provide a more detailed description of physiologic abnormalities and the likely underlying pathology. The choice and sequence of testing are guided by information taken from the history and physical examination.

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