Category:ABG: Difference between revisions
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IF [[FiO2]] ≥ 50% - Base the selection of the '''worst''' ABG on the '''worst''' [[AaDO2]]. | IF [[FiO2]] ≥ 50% - Base the selection of the '''worst''' ABG on the '''worst''' [[AaDO2]]. | ||
[[AaDO2]] Calculation: | [[AaDO2]] Calculation: | ||
[[AaDO2]] is the arterial-alveolar O<sub>2</sub> tension difference) | [[AaDO2]] is the arterial-alveolar O<sub>2</sub> tension difference) | ||
[[AaDO2]] = ([[FiO2]] X 713) - [[PO2]] - [[CO2]] | [[AaDO2]] = ([[FiO2]] X 713) - [[PO2]] - [[CO2]] | ||
e.g. ([[FiO2]] 0.5 X 713) - [[PO2]] 85- [[CO2]] 40 = [[AaDO2]] 231.5 | e.g. ([[FiO2]] 0.5 X 713) - [[PO2]] 85- [[CO2]] 40 = [[AaDO2]] 231.5 | ||
Revision as of 10:01, 2009 July 22
Arterial Blood Gas (ABG)
ABG for APACHE II
All arterial blood gas results (FiO2, PO2, CO2 & PH) should be obtain from the SAME SPECIMEN.TOstryzniuk 20:57, 5 March 2009
- An ABG result is preferred, but if no ABG available during the first 24 hours in ICU then select the worst serum CO2
Select the worst deviation from normal Arterial Blood Gases (ABG) in the first 24 hours of ICU admission as outlined on the APACHE Scoring table. Do not use venous gases.
IF FiO2 ≤ 49% - Base the selection of the worst ABG on the worst PO2.
IF FiO2 ≥ 50% - Base the selection of the worst ABG on the worst AaDO2.
AaDO2 Calculation:
AaDO2 is the arterial-alveolar O2 tension difference)
AaDO2 = (FiO2 X 713) - PO2 - CO2
e.g. (FiO2 0.5 X 713) - PO2 85- CO2 40 = AaDO2 231.5
- See FiO2 table
- See APACHE Scoring table
This element is also collected for:
- Labs test counts
TOstryzniuk 20:07, 5 March 2009 (CST)
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Pages in category "ABG"
The following 15 pages are in this category, out of 15 total.