3/10/2024 0 Comments Peak flow meter test![]() If in doubt, contact your medical team for advice. This would usually involve contacting a doctor or hospital. Severe airway narrowing may be occurring and immediate action needs to be taken. Red Zone: Less than 50 percent of the usual or normal peak flow readings. It may mean respiratory airways are narrowing and additional medication may be required. If an infected patient needs to be tested, a flow sensorbased spirometer with detachable pneumotachometer. This is a crucial outpatient diagnostic tool, which may also be a potential source of infection in the PFT laboratory. ![]() Yellow Zone: 50 to 79 percent of the usual or normal peak flow readings indicates caution. Peak flow meters in respiratory practice have been likened to glucometers in diabetic practice. A peak flow reading in the green zone indicates that the lung function management is under good control. Green Zone: 80 to 100 percent of the usual or normal peak flow readings are clear. Doctors and health practitioners develop management plans based on the green-yellow-red zones. Peak flow readings are often classified into 3 zones of measurement according to the American Lung Association green, yellow, and red. Enter this value in your “Target PEF.” data field. This chart can be used to read-off your Normal value. The Normal value (Target value) for PEF varies according to gender, age and height. It is important to use the same peak flow meter every time to ensure consistency of the readings. However, it can be useful in some circumstances to monitor the severity of it or efficacy of treatment. It is classically reduced in obstructive lung disorders, such as Asthma, COPD or Cystic Fibrosis.ĭue to the wide range of ‘normal’ values and high degree of variability, peak flow is not the recommended test to identify respiratory disease. Measurement of PEFR requires some practise to correctly use a meter and the normal expected value depends on a patient’s gender, age and height. From changes in recorded values, we may determine lung functionality, severity of asthma symptoms, and treatment options. Peak flow readings are higher when we are well, and lower when the airways are constricted. It measures the airflow through the bronchi of the lungs and thus the degree of obstruction in the airways. This is a small, hand-held device used to monitor a person’s ability to breathe out air. Any duplication or distribution of the information contained herein is strictly prohibited.Peak Expiratory Flow (PEF), also called Peak Expiratory Flow Rate (PEFR) is a person’s maximum speed of expiration, as measured with a peak flow meter like the unit available from Activ8rlives. No warranty of any kind, either expressed or implied, is made as to the accuracy, reliability, timeliness, or correctness of any translations made by a third-party service of the information provided herein into any other language. Links to other sites are provided for information only – they do not constitute endorsements of those other sites. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. This site complies with the HONcode standard for trustworthy health information: verify here. Learn more about A.D.A.M.'s editorial policy editorial process and privacy policy. is among the first to achieve this important distinction for online health information and services. follows rigorous standards of quality and accountability. is accredited by URAC, for Health Content Provider (URAC's accreditation program is an independent audit to verify that A.D.A.M.
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