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An asthma diary helps you keep track of how well you are managing your asthma.
If you have symptoms or an asthma attack, record the trigger (if possible), the symptoms, and what kind of medicine you used for relief and how well it worked. Also note if you had to contact your doctor or seek emergency care. This can help you know your triggers and help your doctor monitor your treatment.
If your doctor recommends it, measure your peak expiratory flow (PEF) often, every morning and evening if possible, and record it in your diary. It may be helpful to record your PEF using the same green, yellow, and red zone system used in your asthma action plan.
Here is an example of how to use an asthma diary if you are keeping track of peak flow.
Week of October 12
My personal best peak flow is 400 litres per minute. My:
My current long-term (controller) medicine is fluticasone.
Date
AM/PM PEF
Trigger
Symptoms
Quick-relief medicine and response
Red zone visit to doctor/hospital?
Green
Yellow
Red
Monday
3:50 a.m.
3:00 p.m.
Salbutamol
Improved PEF
No
Tuesday
190
Swimming
Wheezing
Eliminated wheezing
Adaptation Date: 3/2/2022
Adapted By: Alberta Health Services
Adaptation Reviewed By: Alberta Health Services
Adapted with permission from copyrighted materials from Healthwise, Incorporated (Healthwise). This information does not replace the advice of a doctor. Healthwise disclaims any warranty and is not responsible or liable for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions.