Infant Pulmonary Function Test
The pediatric pulmonology team at the American Family Children's Hospital offers consultation and comprehensive care for children with various respiratory disorders.
An infant pulmonary function test measures the size of a child's lungs and how easily air moves through them. Sedation is used during the test.
What to Expect
Parents can stay with their children throughout the test. Your child will receive a sedative by mouth to help him or her sleep through the test and will have a heart monitor and blood oxygen monitor, or pulse oximeter, for the entire test.
After the sedative takes effect, your child will be placed in a crib and monitored until he or she wakes up. A mask attached to the pulmonary function machine is placed over his or her nose and mouth, but your child is able to breathe freely with the mask on. Several gentle inflations are given through the mask in order to relax the respiratory muscles before measuring the lung size.
A cloth vest will be placed around your child's chest to help blow air out during breathing. The pulmonary function machine can be noisy during the test, but most children sleep through the noise. The test normally takes 45 minutes to two hours, depending how well your child sleeps through the test. After the test your child will be watched in the sedation clinic until he or she wakes up and is able to eat and drink.