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Why should I use a peak flow meter?

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Readings from a peak flow meter can help you or your child recognize early changes that may be signs that their asthma is getting worse.

During an asthma attack, the muscles in the airways tighten and cause the airways to narrow. The peak flow meter alerts you to this often hours or even days before you have any asthma symptoms. By using your PEF with your asthma action plan, you will know when to take your rescue (quick acting) asthma inhaler or other asthma medicine.

From: Asthma and the Peak Flow Meter WebMD Medical Reference

SOURCES:

American Academy of Allergy, Asthma & Immunology: "Peak Flow Meter: Tips to Remember." 

American Lung Association: "Measuring Your Peak Flow Rate."

MedlinePlus: "How to use your peak flow meter."

Asthma and Allergy Foundation of America: "Peak Flow Meters."

Reviewed by Dan Brennan on August 18, 2019

SOURCES:

American Academy of Allergy, Asthma & Immunology: "Peak Flow Meter: Tips to Remember." 

American Lung Association: "Measuring Your Peak Flow Rate."

MedlinePlus: "How to use your peak flow meter."

Asthma and Allergy Foundation of America: "Peak Flow Meters."

Reviewed by Dan Brennan on August 18, 2019

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THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

    This tool does not provide medical advice. See additional information.

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