The nurse is caring for four clients: Client A, who has emphysema and whose oxygen saturation is 94% on room air; Client B, with a postoperative hemoglobin of 8.2 mg/dL (82 g/L); Client C, newly admitted with a potassium level of 3.8 mEq/L (3.8 mmol/L); Client D, scheduled for an appendectomy who has a white blood cell (WBC) count of 14,000 mm3 (14 x 109/L). Which intervention should the nurse implement?Reference Range: Hemoglobin [14 to 18 g/dL (140 to 180 g/L)] Potassium [3.5 to 5.0 mEq/L (3.5 to 5.0 mmol/L)] White Blood Cell [5,000 to 10,000/mm3 (5 to 10 x 109/L)]