MEDizzy - A client with significant diarrhea has arterial blood gases

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Altered Fluid and Electrolytes

A client with significant diarrhea has arterial blood gases drawn. The results are pH 7.50, PCO2 35, HCO3 30. Which nursing interpretation of the client’s acid-base imbalance is correct?

ExplanationA pH of 7.50 indicates alkalosis. A corresponding HCO3 above the normal range of 20 to 24 mmol/L indicates the primary acid-base imbalance is metabolic alkalosis. A respiratory alkalosis would result in a PCO2 lower than the normal range of 35 to 45 mm Hg. Respiratory acidosis and metabolic acidosis would result in a pH less than 7.4.