See Also: Methemoglobinaemia(medicine)
acquired methemoglobinaemia(medicine)
congenital methemoglobinaemia(medicine)
enterogenous methemoglobinaemia(medicine)
hereditary methemoglobinaemia(medicine)
primary methemoglobinaemia(medicine)
secondary methemoglobinaemia(medicine)

protonic (iou) and Methemoglobinaemia (medicine)


protonic (iou)



protonic adjective. E20.
[from PROTON + -IC.]
Of, pertaining to, or characteristic of a proton or protons. E20.
Chemistry. (Of an acid, solvent, etc.) protogenic, protic; (of a hydrogen atom in a molecule) able to take part in protonation. M20.

Methemoglobinaemia (medicine)


methemoglobinaemia


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 haemoglobin into methemoglobin, which does not function reversibly as an oxygen carrier. Methemoglobinaemia may be due to a defect in the enzyme NADH methemoglobin reductase (an autosomal recessive trait) or to an abnormality in haemoglobin m (an autosomal dominant trait).