A peak flow meter is an inexpensive, portable, handheld device for people with asthma that is used to measure how well air moves out of your lungs. Measuring your peak flow using this meter is an important part of managing your asthma symptoms and preventing an asthma attack and should form part of your personal asthma action plan2.

A Peak Flow Meter estimates the Peak Expiratory Flow Rate, which is a measure of the fastest speed at which you can exhale the air from your lungs, after inhaling a big breath. The

A peak flow meter helps monitor respiratory conditions such as asthma, by measuring maximum airflow out of your lungs.

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A peak flow meter (or, rarely, a small electronic portable spirometer) is sometimes recommended as part of a treatment plan. These handheld devices measure how fast a person can blow air out of the lungs. Asthma causes patients to not be able to blow air out fast because their airways are narrowed, so a low measurement with this device suggests problems are occurring with your child's asthma.

A standard peak flow meter allows for simple measurements of peak expiratory flow. It consists of a spring-loaded pivoted vane which rotates inside a drum; a forced expiration through the inlet rotates the vane to an extent proportional to the maximum flow developed. The scale of the instrument is calibrated in terms of flow.

A peak flow meter is a small device that helps you check how well your asthma is controlled. Peak flow meters are most helpful if you have 

Peak flow meters are usually available by prescription and can be helpful for anyone with moderate to severe asthma who is over the age of seven years. Part 1 Using Your Meter Download Article 1 Check the meter for obstructions. Peak flow meters only work properly if air is able to freely pass through them.

A peak flow meter helps you check how well your asthma is controlled. Peak flow meters are most helpful for people with moderate or severe asthma.

Peak flow meters have a mouthpiece you forcefully blow into with one powerful breath. The meter measures the force you expel air in liters per 

A peak flow meter measures how fast air moves out of the lungs. This is a good way to check changes in your airways from asthma before you may feel.