Verywell Health on MSN1y
Peak Flow Meter Use and How to Measure Your PEFRMedically reviewed by Daniel More, MD A peak flow meter is used to measure your peak expiratory flow rate (PEFR). PEFR describes how quickly your lungs expel air during a forceful exhalation after you ...
Many outpatients with moderate to severe COPD had suboptimal peak inspiratory flow and had inappropriate devices for measured PIF.
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