With the exception of arterial blood gas, pulse oximetry, and total lung capacity, pulmonary function tests are performed using spirometry (from the Greco-Latin term meaning "to measure breathing").
Spirometry tests can be done a hospital or doctor's office.
Spirometry is a test that measures how rapidly air is exhaled and how much air is retained in the lungs.
Spirometry can also be repeated after a bout of exercise if exercise-induced asthma is a possibility.
During the follow-up visits, the child's lung function should be measured by spirometry to make sure treatment goals are being met.