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The Division of Pulmonary Medicine at Cincinnati Children's performs lung function tests such as plethysmography.
Plethysmography measures how much air your lungs hold. Some disorders decrease or increase this measurement.
Plethysmography is done with your child sitting in an enclosed plexiglass chamber that allows your child and therapist to see in and out. Your child will place padded nose clips on his or her nose and place their mouth around a clean filtered mouthpiece.
Your child will place his or her hands on their cheeks, breathe normally and "pant like a puppy." After panting, your child will go back to breathing normally, blow out air and then take a deep breath.
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