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Methemoglobinemia

{{{Name|Methemoglobinemia}}}
[[Image:{{{Image}}}|190px|center|]]
{{{Caption|}}}
ICD-10 {{ICD10
ICD-O: {{{ICDO}}}
ICD-9 {{{ICD9}}}
OMIM }}}
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| 
 ICD9           = 289.7|
 ICDO           = |
 Image          = |
 Caption        = |
 OMIM           = |
 MedlinePlus    = 000562 |
 eMedicineSubj  = emerg |
 eMedicineTopic = 313 |
 DiseasesDB     = 8100 |

}} Methemoglobinemia, also known as "met-H", is a usually geneticblooddisorder characterized by the presence of a higher than normal level of methemoglobinin the blood.

Inhaltsverzeichnis

  • 1 Types
    • 1.1 Congenital methaemoglobinaemia (D740)
    • 1.2 Acquired/Toxic methaemoglobinaemia (D748)
  • 2 Treatment
  • 3 Well known victims
  • 4 External links

Types

Congenital methaemoglobinaemia (D740)

Due to an enzymedeficiency, the blood of met-H victims has reduced oxygen-carrying capacity. Instead of being red in colour, the arterial blood of met-H victims is brown. This results in the skinof Caucasiansufferers gaining a bluish cast. Hereditary met-H is caused by a recessive gene. If only one parent has this gene offspring will have normal-hued skin, but if both parents carry the gene there is a chance the offspring will have blue-hued skin.

Types include:

  • OMIM250790
  • OMIM250800

Acquired/Toxic methaemoglobinaemia (D748)

Acquired methemoglobinemia can be caused by the use of nitrate-containing drugs, such as nitroglycerin.

It can be caused by drinking water nitrate-nitrogen levels that exceed current EPA standards of 10ppm. Nitrate can cause the reaction in the bloodstream, especially in babies.

Treatment

Methemoglobinemia is treated with the use of methylene blue, which restores the hemoglobin to its normal oxygen-carrying state.

Well known victims

The Blue Fugatesof Appalachia is an extended family from the Appalachian Mountains, historically described as blue, and believed to be positive for met-H.

External links

  • Article on the Fugates of Appalachia, an extended family of blue-skinned peoplede:Methämoglobinämie
Retrieved from "http://en.wikipedia.org/Methemoglobinemia"



This article is licensed under the GNU Free Documentation License.
It uses material from the http://en.wikipedia.org/wiki/Methemoglobinemia Wikipedia article Methemoglobinemia.

 
  All text is available under the terms of the GNU Free Documentation License