Category:ABG

also see Labs for how ABGs are used for ICU Lab counts

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.

• See FiO2 table
• See APACHE Scoring table
• See AaDo2, incl calculation