The half-life of nicotine and carboxyhaemoglobin is thought to be approximately two hours.

After smoking a single cigarette there is a significant nicotine and carboxyhaemoglobin boost which reaches its peak within 10 minutes.

Their skin was coloured cherry-pink from carboxyhaemoglobin, the stable compound formed in the blood by reaction with the gas.

It binds to haemoglobin much more readily than oxygen, leading to the formation of carboxyhaemoglobin: the blood can therefore carry less oxygen.

This is known as "Fetal carboxyhaemoglobin" (%FCOHb).

We observed limitations of SpO in 6 patients treated after inhalation of carbon monoxide (CO), whose carboxyhaemoglobin (COHb) on admission ranged between 29% and 41%.

The breath carbon monoxide level has been shown to have a close relationship with the level of CO in the blood known as carboxyhaemoglobin (%COHb) or "blood CO".

Carboxyhemoglobin (British English: Carboxyhaemoglobin) (COHb) is a stable complex of carbon monoxide and hemoglobin that forms in red blood cells when carbon monoxide is inhaled or produced in normal metabolism.

The following guideline values (ppm values rounded) and periods of time-weighted average exposures have been determined in such a way that the carboxyhaemoglobin (COHb) level of 2.5% is not exceeded, even when a normal subject engages in light or moderate exercise:

Depending on the nature of the myeloproliferative disorder, diagnostic tests may include red cell mass determination (for polycythemia), bone marrow aspirate and trephine biopsy, arterial oxygen saturation and carboxyhaemoglobin level, neutrophil alkaline phosphatase level, vitamin B (or B binding capacity) and serum urate.

Carboxyhaemoglobin concentrations have not been studied in direct relation to gastric secretion in man but this agent may cause relative anoxia of the cell; both anoxia and the thiocyanate ion (another cigarette product) have been shown to prevent the transformation by histamine of a resting parietal cell to its active acid secreting state.

Oxygen should be administered until the carboxyhemoglobin level is normal.

Roughly speaking, such standards translate into 2 percent carboxyhemoglobin in the blood.

This may be a result of raised carboxyhemoglobin levels from carbon monoxide.

In the new study, patients had to raise their blood carbon monoxide level to 6 percent carboxyhemoglobin before a significant effect was seen.

This amount is also called the carboxyhemoglobin level.

Hyperbaric oxygen therapy can speed the return of carboxyhemoglobin levels to normal.

This is due to the carboxyhemoglobin being misrepresented as oxyhemoglobin.

A level of 50% carboxyhemoglobin may result in seizure, coma, and fatality.

Most people normally have at most only a few percent of their hemoglobin as carboxyhemoglobin.

Federal health surveys have found that 5 to 10 percent of all non-smoking Americans have this much carboxyhemoglobin in their blood at any time.

However, an animal, like a human, should survive very small ammounts of carboxyhemoglobin in its blood with very little or no effects.

This process produces a certain amount of carboxyhemoglobin in normal persons, even if they do not breathe any carbon monoxide.

Acute effects are due to the formation of carboxyhemoglobin in the blood, which inhibits oxygen intake.

This carbon monoxide also combines with hemoglobin to make carboxyhemoglobin, but not at toxic levels.

Does anybody know what carboxyhemoglobin is?

Normal carboxyhemoglobin levels in an average person are typically less than 5%, although cigarette smokers (two packs/day) may have levels up to 9%.

A CO-oximeter is used to determine carboxyhemoglobin levels.

Carboxyhemoglobin levels have been shown to have a strong correlation with breath CO concentration.

When carboxyhemoglobin levels exceed 50 percent, respiratory failure, convulsions or seizures, coma and death can follow.

Examination of the airways revealed no soot deposition, and blood carboxyhemoglobin saturation was minimal.

It combines with hemoglobin to produce carboxyhemoglobin, which is ineffective for delivering oxygen to bodily tissues.

It provides clinicians a way to measure the dyshemoglobins carboxyhemoglobin and methemoglobin along with total hemoglobin.

Concentrations as low as 667 ppm may cause up to 50% of the body's hemoglobin to convert to carboxyhemoglobin.

Nonsmokers who live in urban environments, where carbon monoxide is a common air pollutant, typically have levels of up to 2 percent carboxyhemoglobin.

This can be determined by measuring the amount of carboxyhemoglobin compared to the amount of hemoglobin in the blood.