![]() If they're not, try again until you get three numbers that are similar. ![]() The numbers should all be very close together if you're doing it right each time. Regular use of a Peak flow meter can help keep tabs on your asthma by detecting airway narrowing even before you. Repeat steps 1 to 7 two more times as soon as you can after you've taken a few normal breaths.If not, write down the number on the meter at which the marker now rests (spring system) or that shows on your the screen (digital), if not logged electronically. If you coughed, your tongue got in the way, or you didn't get a good seal, repeat these steps and discard that reading.In fact, a peak flow meter is so sensitive to changes in your airways that it can alert you to. A peak flow meter can measure this narrowing hours, even days, before you have any asthma symptoms. Measuring your peak flow using this meter. During an asthma episode, your airways often narrow. A peak flow meter is an inexpensive, portable, handheld device for those with asthma that is used to measure how well air moves out of your lungs. Blow air out as hard and as fast as you can in one breath for no more than one second. A peak flow meter is a handheld device that measures how well air moves out of your lungs.While holding your breath, put the meter's mouthpiece in your mouth, making sure that your tongue is underneath the mouthpiece and your lips are closed tightly to create a seal around it.Inhale deeply, filling up your lungs as much as you can.Attach the mouthpiece if it's not already connected. ![]() The peak current is the amount of air that one can exhale at one time. ![]() If you're using a digital meter, turn it on. The meter on the peak flow meter shows how much air is exhaled. If you're using a meter with a spring system (not digital), make sure the marker on your meter is at 0 or the lowest number. ![]()
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