Amanda Turkiewicz

Breathe in and out, out, out, out…the importance of breathing tests


At most clinic visits you will be asked to do some breathing tests, called spirometry. The reason we use breathing tests to follow your lung function so closely is that we may be able to detect subtle changes in your lung function even before you have any symptoms. This is important because we know that lung function is the most important predictor for how long a person with CF will live. We typically follow the forced expiratory volume in 1 second, or FEV1. This test tells us how much air you can breathe out in the first second or forced exhalation. Our goal is to keep your lung function as high as possible for as long as possible.

You can also click below to learn more and to watch a video of a breathing test from the Lung Association.