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ABG re:
Blood gases
Question | Answer |
---|---|
When the blood gas is compensated, the pH is ? | within normal limits |
When the blood gas is uncompensated, the pH is? | abnormal |
Normal values for pH is ? | 7.35 – 7.45 |
Normal value for PC02 (partial pressure of carbon dioxide is? | pC02: 35 – 45 mmHg |
Normal value for P02 (partial pressure of oxygen)? | 80-100 mmHg |
Normal value of HC03 (bicarbonate)? | 22 – 26 mEq/L |
It's Alkalosis if: | pH above 7.40 |
It's Acidosis if: | pH below 7.40: |
It's Metabolic if : | HCO3 abnormality |
It's Respiratory if: | C02 abnormality |
Respiratory Compensation involves: | Hyperventilation or hypoventilation to alter CO2 blood levels |
Metabolic Compensation involves: | Reabsorbtion or elimination of H+ and HCO3− by the kidneys |
Buffering: | H+ + HCO3− (bicarb) ↔ H2CO3 (carbonic acid) ↔ CO2 + H2O * NaHCO3 (sodium bicarbonate) |
pH: 7.173 pC02: 64** P02 : 183** HC03: 24 | uncompensated respiratory acidosis |
pH: 7.483 pC02: 31.9* P02: 509.8** HC03: 23 | uncompensated respiratory alkalosis |
pH: 7.353 pC02: 63 P02: 190** HC03: 35* | compensated respiratory acidosis CO2 retainer |
pH: 7.384 pC02: 49 P02: 54 HC03: 29 | compensated respiratory acidosis 50/50 club COPD |
pH: 7.208 pC02: 35 P02: 67 HC03: 14 | uncompensated acute metabolic acidosis – lungs are trying to help out- hypoventalitating, kidneys have not kicked in to help pH |
pH - 7.30 PaCO2 - 30 mmHg, HCO3 - 14 mEq/L PaO2 - 50 mmHg | compensated metabolic acidosis with severe hypoxemia |