Search on: FLOW RATE, MAXIMAL MIDEXPIRATORY 
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Descriptor English:   Maximal Midexpiratory Flow Rate 
Descriptor Spanish:   Flujo Espiratorio Medio Máximo 
Descriptor Portuguese:   Fluxo Máximo Médio Expiratório 
Synonyms English:   25-75 Percent, FEF
25-75 Percents, FEF
FEF 25 75 Percent
FEF 25-75 Percent
FEF 25-75 Percents
Flow Rate, Maximal Midexpiratory
Forced Expiratory Flow 025 075 Percent
Forced Expiratory Flow 025-075 Percent
MMFR
Percent, FEF 25-75
Percents, FEF 25-75  
Tree Number:   E01.370.386.700.660.225.510
G09.772.650.300.670
Definition English:   Measurement of rate of airflow over the middle half of a FORCED VITAL CAPACITY determination (from the 25 percent level to the 75 percent level). Common abbreviations are MMFR and FEF 25%-75%. 
Indexing Annotation English:   usually NIM; do not confuse with MAXIMAL EXPIRATORY FLOW RATE; (MEFR)
History Note English:   91(75); was see under FORCED EXPIRATORY FLOW RATES 1975-90 
Allowable Qualifiers English:  
DE drug effects ES ethics
GE genetics IM immunology
PH physiology RE radiation effects
Record Number:   28139 
Unique Identifier:   D008450 

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