With which of the following would the nurse interpret the following arterial blood gas? pH 7.30, PaCO2 30 mm Hg, HCO3 14 mEq/L, and PaO2 50
1. partly compensated respiratory alkalosis with mild hypoxemia
2. compensated metabolic acidosis with severe hypoxemia
3. uncompensated respiratory alkalosis with moderate hypoxemia
4. partly compensated metabolic acidosis with moderate hypoxemia
4
Rationale: The patient has a partly compensated metabolic acidosis with moderate hypoxemia because the pH is still within the acid range. The HCO3 is the primary acidic metabolic component causing the acidic pH. In an attempt to correct the metabolic acidosis, the CO2 is being blown off as indicated by the alkaline PaCO2. The PaO2 falls within the moderate range of hypoxemia (60 to 40 mm Hg).
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