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 ...

Please provide your email address to receive an email when new articles are posted on . Patients may have difficulty completing bronchodilator response testing. Patients with severe asthma may still ...

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 ...