A nurse reviews these laboratory values of a patient who ret…

A nurse reviews these laboratory values of a patient who returned from kidney transplantation 12 hours ago:Sodium136 mEq/L (135 mmol/L)Potassium5 mEq/L (5 mmol/L)Blood urea nitrogen (BUN)44 mg/dL (15.7 mmol/L)Serum creatinine2.5 mg/dL (221 mcmol/L)What initial intervention would the nurse anticipate?