A peak flow meter is a portable, easy to use device that measures your lung functions. It helps you check how well your Asthma is controlled.
A person blows into it and the peak flow meter measures how much air the lungs pushed out. If someone with asthma can't blow out as much air as usual, this may mean he or she is going to have an asthma flare-up.
By using a peak flow meter, you can become more involved with your asthma management. You will be able to provide your doctor with valuable objective information about your asthma.
How to use Peak Flow Meter: