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Maximal Midexpiratory Flow Rate

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Definition: 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%.  usually NIM; do not confuse with MAXIMAL EXPIRATORY FLOW RATE; (MEFR); DF: MMFR    Other names Forced Expiratory Flow 025-075 Percent; MMFR; Percents, FEF 25-75; Percent, FEF 25-75; Forced Expiratory Flow 025 075 Percent; FEF 25-75 Percents; FEF 25 75 Percent; 25-75 Percents, FEF; 25-75 Percent, FEF; Flow Rate, Maximal Midexpiratory; FEF 25-75 Percent

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Sources: NLM Medical Subject Headings, NIH UMLS, Drugs@FDA, FDA AERS original data copyright United States Government. No endorsement implied. Last modified 6/6/2012
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