A peak flow meter is a tool that measures the peak expiratory flow rate (PEFR). The PEFR is the amount of air a person can quickly force out of their lungs in one breath. Using a peak flow meter ...
A peak flow meter is an inexpensive, portable, handheld device for those with asthma that is used to measure how well air moves out of your lungs. Measuring your peak flow using this meter is an ...
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