Serum CO2: Difference between revisions

Revision as of 14:42, 2009 May 25

an ABG result is preferred, but if no ABG available during the first 24 hours in ICU then select the worst serum CO2. (NOTE: for APACHE II scoring: the serum CO2 replaces PH and assumes normal oxygenation).

IF no ABG & no serum CO2 available assume normal and record serum CO2 as 25.0.

NOTE: Serum CO2 is really a measure of serum HCO3-, also called bicarbonate. The procedure used to measure HCO3- in the laboratory first converts it to CO2. In the body, 95% of the CO2 is present as HCO3-, so most of what is measured in the laboratory represents HCO3-.TOstryzniuk 15:42, 25 May 2009 (CDT)

For when and how to collect Serum CO2, check here.

For how to collect for patients who died in ICU, check here

@@ Line 1: / Line 1: @@
-*an [[:Category:ABG | ABG]] result is '''preferred''', but if no ABG available during the first 24 hours in ICU then select the worst '''[[serum CO2]]'''
+*an [[:Category:ABG | ABG]] result is '''preferred''', but if no ABG available during the first 24 hours in ICU then select the worst '''[[serum CO2]]'''.  (NOTE: for APACHE II scoring: the serum CO2 replaces PH and assumes normal oxygenation).
 *IF '''no''' ABG & '''no''' serum CO2 available assume normal and record serum CO2 as '''25.0'''.
-*[[User:TOstryzniuk|TOstryzniuk]] 21:15, 5 March 2009 (CST)
+*NOTE: '''Serum CO2''' is really a measure of '''serum HCO3-''', also '''called bicarbonate'''. The procedure used to measure HCO3- in the laboratory first converts it to CO2. In the body, 95% of the CO2 is present as HCO3-, so most of what is measured in the laboratory represents HCO3-.[[User:TOstryzniuk|TOstryzniuk]] 15:42, 25 May 2009 (CDT)
@@ Line 10: / Line 12: @@
 For how to collect for patients who died in ICU, check [[General Collection Guidelines for Apache II#For patients who "died" in ICU|here]]
+*[[User:TOstryzniuk|TOstryzniuk]] 21:15, 5 March 2009 (CST)
-{{stub}}
 [[Category:APACHE II Physiological Variables]]