Maximal expiratory flow rate (Forced Expiratory Flow 0.2-1.2; Forced Expiratory Flow 200-1200)

The airflow rate measured during the first liter expired after the first 200 ml have been exhausted during a FORCED vital capacity determination. Common abbreviations are MEFR, FEF 200-1200, and FEF 0.2-1.2.


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WHO - World Health OrganizationPubMed - A service of the National Library of Medicine and National Institutes of HealthMEDLINE - Literature from the National Library of MedicineMeSH - Medical Subject HeadingsDeCS - Health Sciences Descriptors
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