Arterial Blood Gases Flashcards
Normal Range: pH
7.35 - 7.45
Normal Range: pCO2
35 - 45 mmHg
Normal Range: Bicarbonate
22 - 26 mEq/L
Normal Range: Base Deficit
-2 to 2 mEq/L
____ is an indicator of acid.
CO2
______ moves in the same direction as pH
Bicarbonate
Base Deficit Replacement Formula
.1 x (-BE) x KG
Normal Range: O2
80 - 100 mmHg
A PaO2 of ___ mmHg is roughly equal to an SaO2 of 90%
60
Normal Range of SaO2:
> 95%
If CO2 follows pH:
Respiratory in nature
If HCO3 follows pH:
Metabolic in Nature
if the pH is OUTSIDE of normal values, and both respiratory and metabolic are outside normal values, it is ___________.
Partially compensated
If the pH is INSIDE normal values, but CO2 and HCO3 are both OUTSIDE normal ranges, the ABG is said to be ___________.
Fully compensated
__________ is caused by nasogastric suctioning, diuretics, corticosteroids, antacid poisoning, Diamox
Metabolic Alkalosis
___________ is caused by ketoacidosis, hyperthermia/fever, seizures and rhabdomyalysis
Metabolic Acidosis
_________ is caused by ASA poisoning, or hyperthermia/heat injuries, hyper metabolic states, fever, anxiety, pain, pregnancy, high altitude
Respiratory Alkalosis
________ is caused by chest wall injury, CNS depression, lung injury, rib fractures,COPD, Asthma
Respiratory Acidosis
____ is a byproduct of metabolism.
CO2
For every change in 10 mmHg ETCO2, you should expect the pH to change _____ the OPPOSITE directions.
0.8
When ETCO2 is decreased by 20 mmHg, from 50 to 30 mmHg, the pH will increase .16, from 7.20 to 7.36
For each change in ____ in pH, you should expect HCO3 to change 10 mmol/L in the SAME direction.
.15
When pH is increased by .15, from 7.20 to 7.35, HCO3 will increase from 16 to 26
For each change in .10 in pH, the K+ will shift _____ the OPPOSITE direction.
.6
When pH is increased by .20 from 7.20 to 7.40, K+ will decrease by 1.2 from 4.0 to 2.8
