Spirometry (breathing test)

Spirometry is a breathing test that measures how well the lungs are working. It involves breathing in as deeply as you can, and then breathing out fast and hard into a mouthpiece. The mouthpiece is attached to a machine called a "spirometer."

Reproduced from: National Heart Lung and Blood Institute. How is COPD diagnosed? More information available at: https://www.nhlbi.nih.gov/health-topics/copd (Accessed on December 10, 2021).

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