have never used a peak flow meter , talk with your doctor about how
to use it correctly, and then practice using it.
Measure your PEF
routinely. Check your breathing regularly, even if you are feeling good. PEF is
lowest in the early morning and highest in the afternoon. When you measure your
PEF once a day, it needs to be done first thing in the morning before you use
your asthma medicine.
It's very important to record the results of
your PEF measurements in your asthma diary. This will help you measure changes
in your breathing. Take your asthma diary with you when you see your doctor so you can review it together. It's very important to review the
diary with your doctor whenever you feel your lung function is
Measuring your peak expiratory flow
any gum or food you may have in your mouth.
Then use your peak flow meter to:
- Measure your peak expiratory flow .
have blown into the meter 3 times, take the highest number you received,
and write it in your asthma diary or on another record sheet.
you cough or make a mistake during the testing, do the test over.
Different brands of meters may give different values for results. If you
change meters, you will need to determine your asthma zones using the new
Note: If your best effort is in your
red zone, take your relief medicine immediately and call your doctor or go to
the emergency room.
Test Your Knowledge
When you measure your PEF once a day, it needs to be
done first thing in the morning before you use your asthma
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