Pulmonary Function Tests

What is a Pulmonary Function Test?

Pulmonary Function Testing is used to assess lung mechanics and gas exchange efficiency and to classify respiratory impairment and help guide therapy options.

How are Pulmonary Function Tests Performed?

In a Pulmonary Function Test (PFT), also called a Spirometry Test, you breathe into a mouthpiece that is connected to an instrument called a spirometer. It records the amount and the rate of air that you breathe in and out over a period of time.

Some PFTs allow you to breathe normally and quietly; others require forced inhalation or exhalation after a deep breath. Some patients experience a short period of light-headedness or shortness of breath.