The nurse is admitting a patient with acute exacerbation of colitis. The ABG findings include: pH 7.33, PaO2 95, PaCO2 43, and HCO3 17. The nurse would anticipate which initial intervention to correct this problem?
1. Administration of isotonic fluids
2. Administration of oxygen
3. Administration of potassium
4. Administration of bicarbonate
Administration of isotonic fluids
Rationale: The nurse would expect initial management to include administration of fluids, as this patient is in metabolic acidosis related to gastrointestinal fluid and potassium loss due to colitis. Once the patient is hydrated and renal function is assessed, the patient would be given potassium replacement. Oxygen levels are normal and do not need correction. Bicarbonate administration is not common unless the pH is less than 7.0 or the metabolic acidosis does not correct as the original problem is corrected.
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