Acid Base Review

  1. 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%
  2. Match: if a patient goes into Respiratory acidosis, how will the body compensate?




    B.
  3. Match: if the body goes into metabolic acidosis, how will the body compensate?




    D. PaCO2 < 40mmHg
  4. Match: if the body goes into respiratory alkalosis, how will the body compensate?




    D.
  5. Match: if a patient goes into metabolic alkalosis, how will the body compensate?




    C. PaCO2 > 40mmHg
  6. 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.**
  7. 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)
  8. 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.
  9. 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
  10. 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
  11. 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.
Author
edeleon
ID
342376
Card Set
Acid Base Review
Description
ADN-D EXAM2
Updated