ACID-BASE ANALYSIS-STEP 4

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SUMMARY ARTICLE


1. Check the respiratory component.

2. In metabolic acidosis, the expected pCO2 is 15 + actual HC03- from the chemistry.

3. In metabolic alkalosis, the expected  pCO2 increases by 0.7 mmHg for every 1 mEq/L increase in the HC03- ⇒ 0.7*rise in measured bicarb.

4. If higher than expected  pCO2  is present in the blood gas results, a respiratory acidosis is present.

5. If lower than expected  pCO2  is present in the blood gas results, a respiratory alkalosis is present.