Definitions for methemoglobinemia
methe·moglobine·mi·a

WiktionaryRate this definition:0.0 / 0 votes

1. methemoglobinemianoun

   A form of toxic anemia characterized by the presence of methemoglobin in the blood

WikipediaRate this definition:0.0 / 0 votes

1. Methemoglobinemia

   Methemoglobinemia, or methaemoglobinaemia, is a condition of elevated methemoglobin in the blood. Symptoms may include headache, dizziness, shortness of breath, nausea, poor muscle coordination, and blue-colored skin (cyanosis). Complications may include seizures and heart arrhythmias.Methemoglobinemia can be due to certain medications, chemicals, or food or it can be inherited. Substances involved may include benzocaine, nitrates, or dapsone. The underlying mechanism involves some of the iron in hemoglobin being converted from the ferrous [Fe2+] to the ferric [Fe3+] form. The diagnosis is often suspected based on symptoms and a low blood oxygen that does not improve with oxygen therapy. Diagnosis is confirmed by a blood gas.Treatment is generally with oxygen therapy and methylene blue. Other treatments may include vitamin C, exchange transfusion, and hyperbaric oxygen therapy. Outcomes are generally good with treatment. Methemoglobinemia is relatively uncommon, with most cases being acquired rather than genetic.

WikidataRate this definition:0.0 / 0 votes

1. Methemoglobinemia

   Methemoglobinemia is a disorder characterized by the presence of a higher than normal level of methemoglobin in the blood. Methemoglobin is a form of hemoglobin that contains ferric [Fe3+] iron and has a decreased ability to bind oxygen. However, the ferric iron has an increased affinity for bound oxygen. The binding of oxygen to methemoglobin results in an increased affinity of oxygen to the three other heme sites within the same tetrameric hemoglobin unit. This leads to an overall reduced ability of the red blood cell to release oxygen to tissues, with the associated oxygen–hemoglobin dissociation curve therefore shifted to the left. When methemoglobin concentration is elevated in red blood cells, tissue hypoxia can occur.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. 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)

How to pronounce methemoglobinemia?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say methemoglobinemia in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of methemoglobinemia in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of methemoglobinemia in Pythagorean Numerology is: 4

Popularity rank by frequency of use

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Methemoglobinemia
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Methemoglobinemia
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=methemoglobinemia