Blood gas analysis: Difference between revisions
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imported>Robert Badgett (New page: In medicine and physiology, '''blood gas analysis''' is "measurement of oxygen and carbon dioxide in the blood."<ref>{{MeSH}}</ref> ==References== <references/>) |
imported>Robert Badgett No edit summary |
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In [[medicine]] and [[physiology]], '''blood gas analysis''' is "measurement of [[oxygen]] and [[carbon dioxide]] in the blood."<ref>{{MeSH}}</ref> | In [[medicine]] and [[physiology]], '''blood gas analysis''' is "measurement of [[oxygen]] and [[carbon dioxide]] in the blood."<ref>{{MeSH}}</ref> | ||
==Venous blood== | |||
One study concluded "The mean difference between arterial and venous values of pH was 0.03 pH units."<ref name="pmid16858095">{{cite journal |author=Middleton P, Kelly AM, Brown J, Robertson M |title=Agreement between arterial and central venous values for pH, bicarbonate, base excess, and lactate |journal=Emerg Med J |volume=23 |issue=8 |pages=622–4 |year=2006 |month=August |pmid=16858095 |doi=10.1136/emj.2006.035915 |url=http://emj.bmj.com/cgi/pmidlookup?view=long&pmid=16858095 |issn=}}</ref> If the pCO2 of of venous blood is less than 45 mm Hg, then the arterial pCO2 is very likely less than 50 mm hg.<ref name="pmid15837016">{{cite journal |author=Kelly AM, Kerr D, Middleton P |title=Validation of venous pCO2 to screen for arterial hypercarbia in patients with chronic obstructive airways disease |journal=J Emerg Med |volume=28 |issue=4 |pages=377–9 |year=2005 |month=May |pmid=15837016 |doi=10.1016/j.jemermed.2004.10.017 |url=http://linkinghub.elsevier.com/retrieve/pii/S0736-4679(05)00022-3 |issn=}}</ref> | |||
==Artifacts in measurement== | |||
===Delay in analysis after collection of blood=== | |||
===Exposure of bllod to room aire=== | |||
==References== | ==References== | ||
<references/> | <references/> | ||
Revision as of 06:53, 28 January 2009
In medicine and physiology, blood gas analysis is "measurement of oxygen and carbon dioxide in the blood."[1]
Venous blood
One study concluded "The mean difference between arterial and venous values of pH was 0.03 pH units."[2] If the pCO2 of of venous blood is less than 45 mm Hg, then the arterial pCO2 is very likely less than 50 mm hg.[3]
Artifacts in measurement
Delay in analysis after collection of blood
Exposure of bllod to room aire
References
- ↑ Anonymous (2024), Blood gas analysis (English). Medical Subject Headings. U.S. National Library of Medicine.
- ↑ Middleton P, Kelly AM, Brown J, Robertson M (August 2006). "Agreement between arterial and central venous values for pH, bicarbonate, base excess, and lactate". Emerg Med J 23 (8): 622–4. DOI:10.1136/emj.2006.035915. PMID 16858095. Research Blogging.
- ↑ Kelly AM, Kerr D, Middleton P (May 2005). "Validation of venous pCO2 to screen for arterial hypercarbia in patients with chronic obstructive airways disease". J Emerg Med 28 (4): 377–9. DOI:10.1016/j.jemermed.2004.10.017. PMID 15837016. Research Blogging.