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.

When it comes to asthma monitoring, the eye is the key; according to Associate Professor Helen Reddel, who has spent years researching and refining a new peak expiratory flow chart.

Asthma Montoring: New Approach To Peak Flow Monitoring Date: November 1, 2007 Source: Woolcock Institute Summary: When it comes to asthma monitoring, the eye is the key; according to one professor ...