Spirometry is an exam that measures the amount of air that a person is able to inhale or exhale each time he breathes, that is, the amount of air that an individual is able to put in and out of the lungs and the speed with that does it (flow analysis).
As a routine examination in pulmonology, it is possible to assess lung health both in investigations of diseases such as bronchial asthma, as well as in occupational medicine.