Diseases

Methemoglobinemia

The presence of methemoglobin in the blood, resulting in cyanosis. A small amount of methemoglobin is present in the blood normally, but injury or toxic agents convert a larger proportion of hemoglobin into methemoglobin, which does not function reversibly as an oxygen carrier. Methemoglobinemia may be due to a defect in the enzyme NADH methemoglobin reductase (an autosomal recessive trait) or to an abnormality in hemoglobin M (an autosomal dominant trait). (Dorland, 27th ed)

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The presence of methemoglobin in the blood, resulting in cyanosis. A small amount of methemoglobin is present in the blood normally, but injury or toxic agents convert a larger proportion of hemoglobin into methemoglobin, which does not function reversibly as an oxygen carrier. Methemoglobinemia may be due to a defect in the enzyme NADH methemoglobin reductase (an autosomal recessive trait) or to an abnormality in hemoglobin M (an autosomal dominant trait). (Dorland, 27th ed)

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Synonyms

1 entry terms
  • Methemoglobinemias

MeSH Record

Aspects Covered

35 allowable subheadings

Indexed with the subheadings blood, cerebrospinal fluid, chemically induced, classification, complications, congenital, diagnosis, diagnostic imaging, diet therapy, drug therapy, economics, embryology, enzymology, epidemiology, ethnology, etiology, genetics, history, immunology, metabolism, microbiology, mortality, nursing, parasitology, pathology, physiopathology, prevention & control, psychology, radiotherapy, rehabilitation, surgery, therapy, urine, veterinary, virology.

MeSH Record

Indexing Annotation

presence of methemoglobin in blood

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NLM Classification

WH 190

AMA Style

References

  1. National Library of Medicine. Methemoglobinemia. Medical Subject Headings (MeSH). 2026. Unique ID D008708. http://id.nlm.nih.gov/mesh/2026/D008708
  2. Methemoglobinemia. In: Wikipedia. https://en.wikipedia.org/wiki/Methemoglobinemia
  3. Methemoglobinemia. In: Wikidata. https://www.wikidata.org/wiki/Q748442