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| Value | Normal Range | Abnormal Values |
| pH | 7.35-7.45 | pH < 7.35 indicates ACIDOSIS (ACID) ph > 7.45 indicates ALKALOSIS (BASE) |
| PaCO2(Respiratory System) | 35-45 | PaCO2 < 35 indicates ALKALOSIS (BASE) PaCO2 > 45 indicates ACIDOSIS (ACID) |
| HCO3(Metabolic System) | 22-26 | HCO3 < 22 indicates ACIDOSIS (ACID) HCO3 > 26 indicates ALKALOSIS (BASE) |
With ABG interpretation problems, we are trying to figure out 3 things:
| pH | PaCO2 | HCO3 | Interpretation |
| Acid | Acid | Normal | Uncompensated respiratory acidosis.(Respiratory system is acting up, Metabolic system is NOT trying to fix the situation). |
| Acid | Acid | Base | Partially compensated respiratory acidosis.(Respiratory system is acting up, Metabolic system is TRYING to fix the situation). |
| Normal (but closer to acidic) | Acid | Base | Fully compensated respiratory acidosis.(Respiratory system is acting up, Metabolic system has FIXED the situation). |
| pH | PaCO2 | HCO3 | Interpretation |
| Base | Base | Normal | Uncompensated respiratory alkalosis.(Respiratory system is acting up, Metabolic system is NOT trying to fix the situation). |
| Base | Base | Acid | Partially compensated respiratory alkalosis.(Respiratory system is acting up, Metabolic system is TRYING to fix the situation). |
| Normal (but closer to basic) | Base | Acid | Fully compensated respiratory alkalosis.(Respiratory system is acting up, Metabolic system has FIXED the situation). |
| pH | PaCO2 | HCO3 | Interpretation |
| Acid | Normal | Acid | Uncompensated metabolic acidosis.(Metabolic system is acting up, Respiratory system is NOT trying to fix the situation). |
| Acid | Base | Acid | Partially compensated metabolic acidosis.(Metabolic system is acting up, Respiratory system is TRYING to fix the situation). |
| Normal (but closer to acidic) | Base | Acid | Fully compensated metabolic acidosis.(Metabolic system is acting up, Respiratory system has FIXED the situation). |
| pH | PaCO2 | HCO3 | Interpretation |
| Base | Normal | Base | Uncompensated metabolic alkalosis.(Metabolic system is acting up, Respiratory system is NOT trying to fix the situation). |
| Base | Acid | Base | Partially compensated metabolic alkalosis.(Metabolic system is acting up, Respiratory system is TRYING to fix the situation). |
| Normal (but closer to basic) | Acid | Base | Fully compensated metabolic alkalosis.(Metabolic system is acting up, Respiratory system has FIXED the situation). |
This video is a blessing to me. It is short and straight to the point. very easy to understand.
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Katie
December 17, 2020
Wow! I was very confused about ABGs before this video and now I completely understand them! Thank you so much for keeping it short and simple.