Analytical, Diagnostic and Therapeutic Techniques, and Equipment

Maximal Expiratory Flow Rate

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.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

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.

MeSH Record

Classification

Broader headings

Related Concepts

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MeSH Record

Synonyms

6 entry terms
  • Flow Rate, Maximal Expiratory
  • Forced Expiratory Flow 0.2-1.2
  • Forced Expiratory Flow 200-1200
  • MEFR
  • Forced Expiratory Flow 0.2 1.2
  • Forced Expiratory Flow 200 1200

MeSH Record

Aspects Covered

6 allowable subheadings

Indexed with the subheadings drug effects, ethics, genetics, immunology, physiology, radiation effects.

MeSH Record

Indexing Annotation

usually NIM; do not confuse with MAXIMAL MIDEXPIRATORY FLOW RATE; (MMFR)

MeSH Record

History Note

91(75); was see under FORCED EXPIRATORY FLOW RATES 1975-90

MeSH Hierarchy

Tree Numbers

  1. E01w.370.386.700w.660.225.500
  2. G09.772.650.300.590

AMA Style

References

  1. National Library of Medicine. Maximal Expiratory Flow Rate. Medical Subject Headings (MeSH). 2026. Unique ID D008448. http://id.nlm.nih.gov/mesh/2026/D008448
  2. Maximal Expiratory Flow Rate. In: Wikidata. https://www.wikidata.org/wiki/Q71228198