Search results
Results from the WOW.Com Content Network
Carboxyhemoglobin (carboxyhaemoglobin BrE) (symbol COHb or HbCO) is a stable complex of carbon monoxide and hemoglobin (Hb) that forms in red blood cells upon contact with carbon monoxide. Carboxyhemoglobin is often mistaken for the compound formed by the combination of carbon dioxide and hemoglobin, which is actually carbaminohemoglobin.
The average carboxyhemoglobin (CO-Hb) level in a non-smoker is under 3% CO-Hb (whereas a smoker may reach levels near 10% CO-Hb), [18] though geographic location, occupation, health and behavior are contributing variables.
Finger tip carboxyhemoglobin saturation monitor.. A CO-oximeter is a device that measures the oxygen carrying state of hemoglobin in a blood specimen, including oxygen-carrying hemoglobin (O2Hb), non-oxygen-carrying but normal hemoglobin (HHb) (formerly, but incorrectly, referred to as 'reduced' hemoglobin), as well as the dyshemoglobins such as carboxyhemoglobin (COHb) and methemoglobin (MetHb).
Production rates, secretion rates, clearance rates, and blood levels of major sex hormones; Sex Sex hormone Reproductive phase Blood production rate Gonadal secretion rate Metabolic clearance rate Reference range (serum levels) SI units Non-SI units Men Androstenedione –
[55] [56] [57] Mammals maintain a baseline carboxyhemoglobin level even if they do not breathe any CO fumes. In mammals, CO is produced through many enzymatic and non-enzymatic pathways. The most extensively studied source is the catabolic action of heme oxygenase (HMOX) which has been estimated to account for 86% of endogenous CO production.
Apples. The original source of sweetness for many of the early settlers in the United States, the sugar from an apple comes with a healthy dose of fiber.
The average carboxyhemoglobin (CO-Hb) level in a non-smoker is between 0.2% and 0.85% CO-Hb (whereas a smoker may have between 4% and 10% CO-Hb), though genetics, geographic location, occupation, health and behavior are contributing variables. Erythrocyte recycling in the spleen accounts for ~80% of heme-derived endogenous CO production.
The ratio of carboxyhemoglobin to hemoglobin molecules in an average person may be up to 5%, although cigarette smokers who smoke two packs per day may have levels up to 9%. [104] In symptomatic poisoned people they are often in the 10–30% range, while persons who die may have postmortem blood levels of 30–90%.