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Home > Wellness > Health Library > Asthma Action Plan: Yellow Zone
asthma action plan is a written plan of what to do if
you have a sudden increase in your asthma symptoms (asthma attack).
The yellow zone may mean that you are having an asthma attack or that your
medicine needs to be increased.
In the yellow zone, your
peak expiratory flow is 50% to 80% of your
personal best measurement. To find 80% of your
personal best, multiply your personal best measurement by 0.80. For example, if
your personal best flow is 400, then 80% of that is 400 times 0.80, which is
320. And 50% of your personal best would be 400 times 0.50, which is 200. In this example, the yellow zone would be any value from 200 to 320. You
may not have any symptoms, but your lung function is reduced. When symptoms are
present, they may be mild to moderate, or they may keep you from your usual
activities or disturb your sleep. Symptoms can include:
Treatment for symptoms in the yellow zone includes the
If you keep going into the yellow zone from the
green zone, talk with your doctor. Your
regular medicine may need to be changed.
March 14, 2013
John Pope, MD - Pediatrics & Lora J. Stewart, MD - Allergy and Immunology
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