Management of Laboratory Values in CKD

A patient with a history of chronic kidney disease (CKD) has been admitted for management of fluid overload and hypertension. The healthcare provider has ordered routine laboratory tests to assess the patient's renal function and electrolyte balance. As the nurse, you are interpreting the following laboratory values:

• Serum Creatinine: 3.2 mg/dL (normal range: 0.6-1.2 mg/dL)
• Blood Urea Nitrogen (BUN): 48 mg/dL (normal range: 6-20 mg/dL)
• Potassium: 6.5 mEq/L (normal range: 3.5-5.0 mEq/L)
• Sodium: 135 mEq/L (normal range: 135-145 mEq/L)
• Phosphorus: 6.2 mg/dL (normal range: 2.5-4.5 mg/dL)
• Calcium: 8.0 mg/dL (normal range: 8.5-10.5 mg/dL)

Based on these laboratory values, which of the following interventions should you prioritize to reduce the risk potential for this patient?