methemoglobin

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Related to Methaemoglobin: carboxyhemoglobin, Blue baby syndrome

methemoglobin

[met‚hē·mə′glō·bən]
(biochemistry)
References in periodicals archive ?
Methaemoglobin refers to haemoglobin of which the haem irons have been oxidised from the normal [Fe.
So the levels of NO, nitrosothiol (NOSO), oxyhaemoglobin (oxyHb) and methaemoglobin (met-Hb) were quantified in RBCs along with met-Hb reductase activity.
Methaemoglobin concentrations were performed using co-oximetry arterial blood gas analysis with results available from the database of the IntelliVue system for only 170 patients.
Patent blue sentinel node mapping in cervical cancer patients may lead to decreased pulse oximeter readings and positive methaemoglobin results.
The maximum formation of methaemoglobin in haemoglobin was observed 5 h after administration of nitrate when the nitrate alone was given to animal.
The normal RBC undergoes auto-oxidation of haemoglobin to methaemoglobin at a slow rate.
One of the problems encountered in measuring oxyhaemoglobin, were the small errors arising from other pigments in the blood, including methaemoglobin, carboxyhaemoglobin and sulfhaemoglobin, as well as reduced haemoglobin.
Standard blood gas analysis is also not capable of detecting and measuring methaemoglobin (4).
It is metabolised to a variety of substances capable of generating methaemoglobin.
Methylene blue acts as a cofactor for NADPH, activating methaemoglobin reductase, which is inactive in patients with congenital methaemoglobinaemia.
Therapeutically, methylene blue converts methaemoglobin to hemoglobin.
Hereditary methaemoglobinaemia is a rare condition clinically characterized by cyanosis due to the presence of methaemoglobin.