An 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 following:
If you keep going into the yellow zone from the green zone, talk with your doctor. Your regular medicine may need to be changed.
|Primary Medical Reviewer||E. Gregory Thompson, MD - Internal Medicine|
|Primary Medical Reviewer||Brian D. O'Brien, MD - Internal Medicine|
|Specialist Medical Reviewer||Lora J. Stewart, MD, MPH - Allergy and Immunology, Pediatrics|
|Last Revised||May 11, 2011|
Last Revised: April 11, 2012
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