MethaemoglobinaemiaD74.9

Author:Prof. Dr. med. Peter Altmeyer

Last updated on: 19.10.2021

Synonym(s)

Hemiglobin cyanosis; Methemoglobin cyanosis

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DefinitionThis section has been translated automatically.

Methaemoglobinaemia with slate grey skin colour. Met-Hb contains iron in III-valent form (hemiglobin), which prevents oxygen from being transferred.

EtiopathogenesisThis section has been translated automatically.

Mostly acquired by taking medication(sulfonamides, dapsone; phenacetin). Less frequently through inhalation of tissue toxins (nitro and ammonium compounds).

Note(s)This section has been translated automatically.

The physiological blood Met-Hb level is <1.0%1 of total adult hemoglobin. Hemoglobin cyanosis may not become apparent until Met-Hb levels >35% of total Hb.

Authors

Last updated on: 19.10.2021

Author: Prof. Dr. med. Peter Altmeyer