Medically 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 ...

A peak flow meter can be used by adults as well as children aged 5 or above. Other than asthmatic people, some people suffering from emphysema and chronic bronchitis may also benefit from using a ...

When spirometry is unavailable, physicians can use the St. George’s Respiratory Questionnaire score plus peak expiratory flow to screen for COPD, according to data published in American Journal ...