peak flow meters
a peak flow meter is a pocket-size device that measures peak expiratory flow (pef), or how much air a person can quickly breathe out. to measure pef, the person takes a deep breath and then blows into a tube on the peak flow meter as hard and as fast as possible. a scale on the device shows how much air is breathed out. this can be done at home.
peak flow meters come in many shapes and sizes.
current as of: august 6, 2023
author: healthwise staff
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