Make sure the red marker is at the bottom of the meter. Take a deep breath, filling your lungs completely. Place the mouthpiece in your mouth. Close your lips tightly on the peak flow meter’s mouthpiece. Blast the air out as hard and as fast as possible in a single blow. Write down the number by the red marker on the meter.. Peak Flow Meter with Color-coded indicators Designed for Adults and Children . Easy Peak Flow Meters. Low Range. Range : Measurement Range 50-400 L/min ; Used for: Child; A Peak Flow Meter measures air flowing out of the lungs and can reveal narrowing of airways well in advance of an asthma attack.
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Measurement of peak expiratory flow gives an idea of how narrow or obstructed a person’s airways are by measuring the maximum (or peak) rate at which they can blow air into a peak flow meter after a deep breath. Peak flow monitoring helps measure how much, and when, the airways are changing. Due to the wide range of ‘normal’ values and high.. A peak flow meter is a portable device that measures your peak expiratory flow rate (PEFR)—that is, how quickly your lungs expel air during a forceful exhalation after you fully inhale. Regularly conducting a peak flow test at home and tracking the results can help you monitor your breathing status and respiratory disease.