CO-oximeter

Finger tip carboxyhemoglobin saturation monitor.

A CO-oximeter is a device for detecting hypoxia, a medical condition relating to oxygen deficiency at tissue level.

The device measures absorption at several wavelengths to distinguish oxyhemoglobin from carboxyhemoglobin and determine the oxyhemoglobin saturation: the percentage of oxygenated Hb compared to the total amount of hemoglobin (Hb), including carboxy-Hb, met-Hb, oxy-Hb, and reduced Hb. When a patient presents with carbon monoxide poisoning (CO), the CO-oximeter will detect this Hb and will report the oxyhemoglobin saturation as markedly reduced.

Measurement

Traditionally, this measurement is made from arterial blood processed in a blood gas analyzer with a CO-oximeter.^[1][2] More recently, pulse CO-oximeters have made it possible to estimate carboxyhemoglobin with non-invasive technology similar to a Pulse oximeter.^[3] In contrast, the use of a standard pulse oximeter is not effective in the diagnosis of CO poisoning as patients suffering from carbon monoxide poisoning may have a normal oxygen saturation reading on a pulse oximeter.^[4]

References

1. ^ Rodkey FL, Hill TA, Pitts LL, Robertson RF (August 1979). "Spectrophotometric measurement of carboxyhemoglobin and methemoglobin in blood". Clinical Chemistry 25 (8): 1388–93. PMID 455674. http://www.clinchem.org/cgi/pmidlookup?view=long&pmid=455674. Retrieved 2009-07-17. 
2. ^ Rees PJ, Chilvers C, Clark TJ (January 1980). "Evaluation of methods used to estimate inhaled dose of carbon monoxide". Thorax 35 (1): 47–51. doi:10.1136/thx.35.1.47. PMC 471219. PMID 7361284. http://thorax.bmj.com/cgi/pmidlookup?view=long&pmid=7361284. Retrieved 2009-07-17. 
3. ^ Coulange M, Barthelemy A, Hug F, Thierry AL, De Haro L (2008). "Reliability of new pulse CO-oximeter in victims of carbon monoxide poisoning". Undersea & Hyperbaric Medicine 35 (2): 107–11. PMID 18500075. http://archive.rubicon-foundation.org/8084. Retrieved 2009-07-17. 
4. ^ Vegfors M, Lennmarken C (May 1991). "Carboxyhaemoglobinaemia and pulse oximetry". British Journal of Anaesthesia 66 (5): 625–6. doi:10.1093/bja/66.5.625. PMID 2031826. http://bja.oxfordjournals.org/cgi/pmidlookup?view=long&pmid=2031826. 

This medical treatment-related article is a stub. You can help Wikipedia by expanding it.v · Categories: Medical testing equipment Oxygen Medical treatment stubs Wikimedia Foundation. 2010. Игры ⚽ Нужен реферат? Optical power List of armoured trains Look at other dictionaries: oximeter — noun Etymology: International Scientific Vocabulary ox + i + meter Date: 1929 an instrument for measuring continuously the degree of oxygen saturation of the circulating blood • oximetry noun …   New Collegiate Dictionary oximeter — oximetric /ok si me trik/, adj. /ok sim i teuhr/, n. Med. an instrument for measuring the oxygen saturation of the hemoglobin in a sample of blood. [1940 45; OX + I + METER] * * * …   Universalium oximeter — noun A device that measures the oxygen saturation of arterial blood …   Wiktionary oximeter — An instrument for determining photoelectrically the oxygen saturation of a sample of blood. cuvette o. an o. that reads the percentage of oxygen saturation of the blood as it passes through a cuvette outside the body. * * * ox·im·e·ter äk sim ət… …   Medical dictionary oximeter — n. device for measuring the amount of oxygen in a substance (especially in hemoglobin) …   English contemporary dictionary oximeter — [ɒk sɪmɪtə] noun an instrument for measuring the proportion of oxygenated haemoglobin in the blood. Derivatives oximetry noun …   English new terms dictionary oximeter — ox·im·e·ter …   English syllables oximeter — n. an instrument for measuring the proportion of oxygenated haemoglobin (oxyhaemoglobin) in the blood …   The new mediacal dictionary oximeter — noun a measuring instrument that measures the oxygen in arterial blood • Hypernyms: ↑measuring instrument, ↑measuring system, ↑measuring device …   Useful english dictionary Pulse oximeter — A finger mounted pulse oximeter taking measurement through the fingernail. A wrist mounted remote sensor pulse oximeter with plethysmogram. A puls …   Wikipedia 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”