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:
If you or a loved one has asthma, you should know about the most effective asthma treatments for short-term relief and long-term control. Understanding asthma treatments will enable you to work with your asthma doctor to confidently manage your asthma symptoms daily. When you do have an asthma attack or asthma symptoms, it's important to know when to call your doctor or asthma specialist to prevent an asthma emergency. Be sure to read all the in-depth articles that link to topics within each of the...
of breath and having chest tightness. (Children may express chest tightness as
Treatment for symptoms in the yellow zone includes the
Take your medicine according to your asthma
If symptoms do not improve within 20 to 60 minutes and
your peak expiratory flow remains less than 70% of your personal best
measurement, follow the
red zone instructions of your asthma action plan, because your lungs are not
responding to medicine.
If you keep going into the yellow zone from the
green zone, talk with your doctor. Your
regular medicine may need to be changed.