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 fully inhale.

SAN FRANCISCO — Physicians can use peak expiratory flow as a first-line tool for assessing variable airflow limitations among patients with asthma, according to a poster presented at the ...

A peak flow meter plays a vital role in effective asthma management by measuring peak expiratory flow, the speed at which air leaves the lungs. Its benefits include:- Early detection of airway ...