After receiving five doses of filgrastim, the nurse notes that the client's white blood cell count has increased from 2,500/mm3 (2.5 x 109/L) to 5,000/mm3 (5 x 109/L). Which action should the nurse implement?

C Review the client's culture and sensitivity reports. B Inform the client that the medication has been effective. D Assess the client's vital signs. A Implement neutropenic precautions.