One day after vaginal delivery of a full-term baby, a postpartum client's white blood cell (WBC) count is 15,000/mm3 (15x 10/L). Which action should the nurse take first? Reference Range: White Blood Cell 5,000 to 10,000/mm3 (5 to 10 10/L)]

Assess the client's perineal area for signs of a perineal hematoma.

Check the differential, since the WBC is normal for this client.

Assess the client's temperature, heart rate, and respirations every 4 hours.

Notify the healthcare provider (HCP), since this finding is indicative of infection.