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An asthma action plan is based on zones defined by your symptoms or your peak flow, or both. It tells you 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.
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:
In the yellow zone, your peak expiratory flow is 60% to 85% of your personal best measurement. To find 85% of your personal best, multiply your personal best measurement by 0.85. For example, if your personal best flow is 400, then 85% of that is 400 times 0.85, which is 340. And 60% of your personal best would be 400 times 0.60, which is 240. In this example, the yellow zone would be any value from 240 to 340. 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.
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.
Adaptation Date: 8/18/2021
Adapted By: Alberta Health Services
Adaptation Reviewed By: Alberta Health Services
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