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Pulmonary Function Testing (Spirometry)
Spirometry is the most basic and most frequently performed test to measure lung function; the ability to move air into and out of the lungs. The tests can be helpful in diagnosing lung diseases such as asthma, bronchitis, and determining what is causing shortness of breath. Pulmonary function testing can also enable doctors to understand how well treatments to improve lung function are working.
Using an instrument called a spirometer, the test is performed while the patient breathes in and out as quickly as possible into a measurement device. Specific measurements from the individual's test are then compared to a standardized set of values, thus comparing the individual's lung function against a norm.
