Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| concept_blood_gas_analysis [2025/05/13 06:27] – [3. Other Useful Information on a Blood Gas] jkohts | concept_blood_gas_analysis [2025/05/13 06:36] (current) – [1.4 Is there any compensation?] jkohts | ||
|---|---|---|---|
| Line 44: | Line 44: | ||
| Both the lungs and kidneys adapt to compensate for acid-base disturbances in an attempt to bring the pH closer to normal. The adequacy of this compensation should be assessed. | Both the lungs and kidneys adapt to compensate for acid-base disturbances in an attempt to bring the pH closer to normal. The adequacy of this compensation should be assessed. | ||
| - | **Respiratory | + | === Respiratory |
| A quick rule is that the PCO₂ should roughly equal the last two digits of the pH value. This only works within a pH range of 7.1-7.6. | A quick rule is that the PCO₂ should roughly equal the last two digits of the pH value. This only works within a pH range of 7.1-7.6. | ||
| Line 51: | Line 51: | ||
| * In metabolic alkalosis, expected PCO₂ = 0.7 [HCO₃⁻] + 20 | * In metabolic alkalosis, expected PCO₂ = 0.7 [HCO₃⁻] + 20 | ||
| - | **Metabolic | + | |
| + | === Metabolic | ||
| Renal metabolic compensation occurs quickly via intracellular buffering, and more slowly via the kidney, where under normal conditions, HCO₃⁻ is absorbed and H⁺ is secreted in varying amounts. | Renal metabolic compensation occurs quickly via intracellular buffering, and more slowly via the kidney, where under normal conditions, HCO₃⁻ is absorbed and H⁺ is secreted in varying amounts. | ||