-
List normal ABG values of each:
pH
pCO2
pCO3
pO2
SaO2
- pH: 7.35-745
- pCO2: 35-45 mmHg
- pCO3: 22-26
- pO2: 80-100 mm Hg
- SaO2: 95-100%
-
Match: if a patient goes into Respiratory acidosis, how will the body compensate?
A.
-
Match: if the body goes into metabolic acidosis, how will the body compensate?
B. PaCO2 < 40mmHg
-
Match: if the body goes into respiratory alkalosis, how will the body compensate?
C.
-
Match: if a patient goes into metabolic alkalosis, how will the body compensate?
C. PaCO2 > 40mmHg
-
A patient shows these lab values:
pH - 7.30
PaCO2 - 25 mm Hg
HCO3 - 16 mEq/L
What kind of acidosis is this?
What kind of compensation is this?
Why?
- It is Metabolic acidosis due to the bicarb being low.
- The CO2 is low, which indicates it is partial respiratory compensation.
- **It is considered a FULL compensation when the pH returns to normal**
- ** Even though the CO2 is low, it isn't respiratory alkalosis because the pH doesn't match.**
-
Lab values show:
pH - 7.52
PaCO2 - 27
HCO3 - 24
What kind of alkalosis is this?
What kind of compensation is this?
- It is respiratory alkalosis (low CO2).
- It is uncompensated (normal HCO3 levels)
-
How can the body compensate for metabolic acidosis in DKA?
What therapy can be done?
- 1. Hyperventilation by blowing out CO2 to bring pH back up.
- 2. Kidneys will also conserve HCO3 and eliminate H+ ions in urine
- 3. Lactate solution used to be converted into bicarbonate ions in liver.
-
If the body goes into metabolic alkalosis from excess ingestion of sodium bicarb, how can the body compensate?
What therapy is done?
- Body: HYPOventilation to retain CO2.
- - Kidneys conserve H+ ions and eliminate HCO3 in urine
- Tx: Chloride containing solution which replaces HCO3 ions (bicarb) with Cl- ions
-
If a patient goes into respiratory acidosis from HYPOventilation, how does the body compensate?
What is the tx?
- Body: Kidneys conserve HCO3 ions and eliminate H+ ions in acidic urine.
- Tx: Give lactate solution
-
If a patient goes into respiratory ALKALOSIS, due to HYPERventilation, how will the body compensate?
Tx?
- Body: Kidneys reserve H+ ions and eliminate HCO3 in urine.
- Tx: Give chloride containing solution. HCO3 ions replaced by Cl- ions.
|
|
