Asthma Zone Calculator
Your Results
Here are the peak flow values for your different asthma zones.Your Green Zone is liters/minute or greater.
What the Green Zone means
The Green Zone is a sign that your asthma is in good control. It means you currently have no symptoms of asthma. You should continue to take your medication as usual.
Your Yellow Zone is from liters/minute to liters/minute.
What the Yellow Zone means
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.
Your Red Zone is anything below liters/minute.
What the Red Zone means
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.
Sources
National Institutes of Health, National Heart, Lung, and Blood Institute. National Asthma Education and Prevention Program, Clinical Practice Guidelines, Expert Panel Report 2, Guidelines for the Diagnosis and Management of Asthma. NIH Publication No. 97-4051. July 1997. page 39. Accessed on the World Wide Web at http://www.nhlbi.nih.gov/guidelines/asthma/asthgdln.pdf
Author:
Lambert, J.G. M.D.
Online Editor:
Sinovic, Dianna
Online Medical Reviewer:
Horan, Richard Francis, MD
Date Last Reviewed:
7/20/2007
Date Last Modified:
3/8/2006