Final answer:
The nurse should intervene in the client's elevated potassium level, elevated white blood cell count, and difficulty in coughing up mucus.
Step-by-step explanation:
The nurse should intervene in the following three findings:
- Potassium level: The client's potassium level is elevated at 5.4 mEq/L, which is above the normal range of 3.5-5 mEq/L. Elevated potassium levels can lead to cardiac dysrhythmias and require intervention.
- WBC count: The client's white blood cell (WBC) count is elevated at 15,000/mm3, which is above the normal range of 5,000-10,000/mm3. This indicates an infection and requires nursing intervention.
- Oxygen saturation: The client's oxygen saturation is 97% on 2 L/min of supplemental oxygen via nasal cannula. Although this is within the normal range (95%-100%), the difficulty in coughing up mucus suggests inadequate oxygenation and should be addressed by the nurse.