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Peak flow meterPatients with asthma commonly use peak flow meters to measure the amount of air they can expel from their lungs. If the airways become narrow and blocked due to asthma, peak flow values will drop. You can use a peak flow meter to monitor your asthma over time and to help determine how well your medications are working.
Related ItemsRelated Encyclopedia Asthma Asthma - children Review Date: 12/26/2011 Reviewed By: Harvey Simon, MD, Editor-in-Chief, Associate Professor of Medicine, Harvard Medical School; Senior Physician, Massachusetts General Hospital.
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