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 ...

A peak flow meter is a user-friendly, portable device that helps measure the ability of the lungs to expel air. It estimates peak expiratory flow rate which is a measure of how rapidly air can be ...

Peak flow rate Doctors use a measurement called peak flow rate to differentiate green, yellow, and red levels. A simple peak flow test can determine peak flow rate by measuring the volume of air that ...

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LONDON--(BUSINESS WIRE)--According to the latest research study released by Technavio, the global respiratory disease testing market is expected to grow at a CAGR of over close to 8.33% until 2019.

During an asthma attack, also called an asthma exacerbation, your airways become swollen and inflamed. The muscles around the airways contract and the airways also produce extra mucus, causing your ...