Serum CO2: Difference between revisions

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{{Data_element

| field_name = ~~Ap_CO2~~

| field_name = Ap_SerCO2

| element_description = The ~~Serum CO2 field contains a~~ patient's Serum ~~carbon dioxide~~ level.

| CCMDB_tab = Apache

| in_table = L_Log

| element_description = The patient's {{#show: Serum CO2 | ?AP phys name}} level in {{#show: Serum CO2 | ?AP phys unit}}.

| in_table = L_Log table

| data_type = number

| datafield_length = single

| program_collecting = CC

| created_raw = Raw

| data_element_sort_index = 69

| data_element_sort_index = 71

}}

~~We collect it for generating the~~ [[APACHE ~~Scoring table|APACHE score~~]].

== Collection instruction ==

Collect Serum CO2 '''only if an [[Arterial blood gas (APACHE)]] is not available'''. An '''ABG is preferred''', but if no ABG available during the first 24 hours in ICU then collect 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).~~''' ~~Do not use venous gases~~.'''

If '''no ABG and no serum CO2''' available assume normal and record serum CO2 as '''25.0'''.

*IF '''~~no''' ABG & '''no''' serum CO2 available assume normal and record serum CO2 as '''25~~.0'''.

''' Do not use venous gases.'''

*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)~~

{{APACHE physiological variable

|AP phys name=Serum CO2

|AP phys unit=mmol/L

|AP phys absMax= 440

|AP phys warnMax= 285

|AP H4= ≥52

|AP H3= >=41 and <52

|AP H1= >=32 and <41

|AP 0= >= 22 and <32

|AP L2= >=18 and <22

|AP L3= >=15 and <18

|AP L4= <15

|AP phys warnMin= 2

|AP phys absMin= 2

}}

== Background ==

For APACHE II scoring: the serum CO2 replaces [[pH]] and assumes normal oxygenation.

~~For~~ '''~~when~~''' ~~and~~ '''~~how~~''' to ~~collect Serum~~ CO2, ~~check [[General Collection Guidelines for Apache II#When to collect~~, ~~which value to use | here]]~~.

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-.

~~For how to collect for patients who died in ICU, check [[General Collection Guidelines for Apache II#For patients who "died" in ICU|here]]~~

== Data Integrity Checks ==

== Related articles ==

[[Category:APACHE II Physiological Variables]]

@@ Line 1: / Line 1: @@
 {{Data_element
-| field_name = Ap_CO2
+| field_name = Ap_SerCO2
-| element_description = The Serum CO2 field contains a patient's Serum carbon dioxide level.
+| CCMDB_tab = Apache
-| in_table = L_Log
+| element_description = The patient's {{#show: Serum CO2 | ?AP phys name}} level in {{#show: Serum CO2 | ?AP phys unit}}.
+| in_table = L_Log table
 | data_type = number
 | datafield_length = single
 | program_collecting = CC
 | created_raw = Raw
-| data_element_sort_index = 69
+| data_element_sort_index = 71
 }}
-We collect it for generating the [[APACHE Scoring table|APACHE score]].
+== Collection instruction ==
+Collect Serum CO2 '''only if an [[Arterial blood gas (APACHE)]] is not available'''. An '''ABG is preferred''', but if no ABG available during the first 24 hours in ICU then collect 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).''' Do not use venous gases.'''
+If '''no ABG and no serum CO2''' available assume normal and record serum CO2 as '''25.0'''.
-*IF '''no''' ABG & '''no''' serum CO2 available assume normal and record serum CO2 as '''25.0'''.
+''' Do not use venous gases.'''
-*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)
+{{APACHE physiological variable
+|AP phys name=Serum CO2
+|AP phys unit=mmol/L
+|AP phys absMax= 440
+|AP phys warnMax= 285
+|AP H4= ≥52
+|AP H3= >=41 and <52
+|AP H1= >=32 and <41
+|AP 0= >= 22 and <32
+|AP L2= >=18 and <22
+|AP L3= >=15 and <18
+|AP L4= <15
+|AP phys warnMin= 2
+|AP phys absMin= 2
+}}
+== Background ==
+For APACHE II scoring: the serum CO2 replaces [[pH]] and assumes normal oxygenation.
-For '''when''' and '''how''' to collect Serum CO2, check [[General Collection Guidelines for Apache II#When to collect, which value to use | here]].
+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-.
-For how to collect for patients who died in ICU, check [[General Collection Guidelines for Apache II#For patients who "died" in ICU|here]]
+== Data Integrity Checks ==
+{{Data Integrity Check List}}
+== Related articles ==
+{{Related Articles}}
 [[Category:APACHE II Physiological Variables]]