Maximal Expiratory Flow Rate
Synonyms
Flow Rate, Maximal Expiratory
Forced Expiratory Flow 0.2 1.2
Forced Expiratory Flow 0.2-1.2
Forced Expiratory Flow 200 1200
Forced Expiratory Flow 200-1200
MEFR
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.