A peak flow meter is a device that measures how well your lungs expel air. The device is a valuable tool for people with a respiratory condition like asthma or COPD, because it helps track the ...

A peak expiratory flow rate (PEFR) measures how effectively you exhale. Also called a peak flow meter, this handheld device helps you document the amount of air and the speed at which you can ...

Factors to consider when selecting an appropriate inhaler device to treat a patient with chronic obstructive pulmonary disease, and the role of measuring peak inspiratory flow to help determine one’s ...