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This calculator is for people with
asthma. It will help you to tell whether your asthma is in good control or not and
the condition of your lungs. You must have a peak flow number to use this calculator.
Peak flow is how fast you exhale air after taking a deep breath.
This calculator will determine your
Green, Yellow and Red Zones, based on your personal best peak flow number.
Once you know your personal best
peak flow number, you can use this calculator or ask your doctor to help determine
the values for your Green, Yellow and Red Zones.
Green Zone
Green zone indicates that your asthma
is in good control. It means that you currently have no symptoms and you should
continue with your regular medication.
Yellow Zone
The Yellow Zone is your caution
signal. It means you need to take your quick-relief medicine right away. The Yellow
Zone also means your asthma may not be in good control. Ask your doctor if you need
to change or increase your daily medications.
Red Zone
The Red Zone is your emergency signal. Take your quick-relief
medicine immediately. Then, call your doctor to find out what to do, or go directly
to a hospital emergency room.
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