Medical term:

carboxyhemoglobin


carboxyhemoglobin

 [kahr-bok″se-he´mo-glo″bin]
hemoglobin in which the sites usually bound to oxygen are bound to carbon monoxide molecules; carbon monoxide has an affinity for hemoglobin over 200 times that of oxygen. See carbon monoxide poisoning.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

car·box·y·he·mo·glo·bin (HbCO),

(kar-bok'sē-hē'mō-glō'bin),
A fairly stable union of carbon monoxide with hemoglobin. The formation of carboxyhemoglobin prevents the normal transfer of carbon dioxide and oxygen during the circulation of blood; thus, increasing levels of carboxyhemoglobin result in various degrees of asphyxiation, including death.
Synonym(s): carbon monoxide hemoglobin, carbonmonoxy myoglobin
Farlex Partner Medical Dictionary © Farlex 2012

carboxyhemoglobin

(kär-bŏk′sē-hē′mə-glō′bĭn)
n.
The compound that is formed when inhaled carbon monoxide combines with hemoglobin, binding more tightly than oxygen and rendering the hemoglobin incapable of transporting oxygen.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

carboxyhemoglobin

Haemoglobin (Hb) with irreversibly bound carbon monoxide (COHb). COHb levels reflect CO exposure, which increases in fires and with exposure to car exhaust; Some COHb occurs naturally as a product of Hb catabolism and due to increased turnover of Hb in newborns, coupled with reduced efficiency of the infant’s respiratory system, leading to increased COHb.

Carboxyhaemoglobin levels
• < 2%: Non-smokers;
• 2%–12%: Smokers;
• > 20%: Toxic;
• > 50%: Lethal.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

carboxyhemoglobin

COHb Hb in which carbon monoxide–CO is irreversibly bound
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

car·box·y·he·mo·glo·bin

(kahr-bok'sē-hē'mŏ-glō'bin)
A stable union of carbon monoxide with hemoglobin. The formation of carboxyhemoglobin prevents the normal transfer of carbon dioxide and oxygen during the circulation of blood; thus, increasing levels of carboxyhemoglobin result in various degrees of asphyxiation, including death.
Synonym(s): carbon monoxide hemoglobin, carboxyhaemoglobin.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Carboxyhemoglobin (COHb)

Hemoglobin that is bound to carbon monoxide instead of oxygen.
Mentioned in: Carbon Monoxide Poisoning
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.

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