Pulmonary Function Test


A pulmonary function test (PFT) evaluates how well the lungs are working. The test measures how much air the lungs can hold, and how well the child can push air out of his or her lungs.



The above video demonstrates a child performing a pulmonary function test for cancer treatment. This video was designed to educate parents and caregivers by showing actual patients receiving treatment. Our intent with this video is to help you, and your child if you chose to show it to them, understand what will happen with your child has this procedure.

Performing the Procedure

The machine that performs the PFT is sometimes a confined space with clear walls and a seat inside. Your child will be asked wear a nose plug and blow into a plastic mouthpiece connected to the machine. The machine measures the amount of air breathed in and the force of the air breathed out. Your child will probably be asked to repeat the test a few times to get an accurate reading.

Pulmonary Function Test

This is a painless test and one that does not have side effects. However, pulmonary function tests require the cooperation of the child. Children can begin to perform this test around 7 years of age.

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