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    Pulmonary Function Test

    What Are Pulmonary Function Tests?

    Pulmonary Function Tests (PFTs) measure how well the lungs inhale and exhale air, and how well they transfer oxygen into the blood.

    How Do Pulmonary Function Tests Work?

    PFTs include a range of tests. One test, spirometry, measures how well the lungs exhale. This is helping in diagnosing lung disorders including asthma and chronic obstructive pulmonary disease (COPD).

    Lung volume measurements are used to detective restrictive lung diseases, or ones where patients cannot inhale a normal volume of air. This can be caused by inflammation or scarring of the lung tissue (interstitial lung disease) or by abnormalities of the muscles or skeleton of the chest wall.

    How Do I Prepare For A PFT?

    You do not need to do anything special to prepare for a PFT. Ask your doctor if you should take any medicines as normal before the test.
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