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Related to methemoglobin: methemoglobin test, Methemoglobin reductase


A brownish-red form of hemoglobin that occurs when hemoglobin is oxidized either during decomposition of the blood or by the action of various oxidizing drugs or toxic agents. It contains iron in the ferric state and cannot function as an oxygen carrier.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Biochemistry) the US spelling of methaemoglobin
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(mɛtˈhi məˌgloʊ bɪn, -ˈhɛm ə-, -ˌhi məˈgloʊ-, -ˌhɛm ə-)

a form of hemoglobin in which iron has been oxidized, resulting in brownish blood that transports less oxygen.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
However, because the arterial blood gas parameters were good, the hemodynamics of the patient were stable, and the methemoglobin concentration was not very high, the patient was extubated after surgery; she was relaxed, cooperative, and had adequate respiration.
Methemoglobin is unable to bind oxygen and shifts the oxygen-dissociation curve to the left [9].
The diagnosis of nitrate/nitrite intoxication is based on herd and feeding history, epidemiology, clinical signs, and results of complementary tests such as hemogasometry, methemoglobin dosage, anatomopathological examination, diphenylamine test, and nitrate dosage in grass and water (RADOSTITS et al., 2007; JONCK et al., 2013).
MRI will best show typically high T1 methemoglobin extending distal to the mid-axis body, overlying the intact, uninjured tectorial membrane at the craniocervical junction.
In light of his elevated carboxyhemoglobin and methemoglobin levels, we asked him social and exposure questions.
hour pH 6.91 7.21 7.25 7.26 7.39 pC[O.sub.2] 45.1 35.1 41.7 46.1 39.5 HC[O.sub.3] 9.5 14.0 17.4 19.4 23.7 Lactate 8.8 11.1 9.4 5.0 1.4 MetHb 86.2 67.7 43.9 24.9 3.2 MetHb: Methemoglobin Table 3.
The rainbow SET technology analyzes multiple wavelengths of light to accurately measure total hemoglobin, oxygen content, carboxyhemoglobin, methemoglobin and Pleth Variability Index non-invasively and continuously.
The first generation of portable POC hemoglobin devices with single-use, dry reagent cuvettes operates based on a modification of Vanzetti's azide methemoglobin method.
High intake of nitrate and its subsequent reduction to nitrite leads to the formation of methemoglobin (MetHb) which is the most detectable sign of nitrite and nitrate toxicity in humans especially in infants (1).
Methemoglobin (MetHb) concentrations have been evaluated in cats exposed intravenously to NMA or aniline at a dose of 30 mg/kg b.w.
Reported negative patient effects from surgical smoke exposure include port site metastasis; increased levels of carboxyhemoglobin; occurrence of methemoglobin; exposure to carbon monoxide; and postoperative nausea, vomiting, and headaches.