A nurse is collecting data from a client who has pneumonia and a prescription for cefazolin. Which of the following findings should the nurse report to the provider prior to administering the initial dose? (Click on the exhibit tabs for additional information about the client. There are three tabs that contain separate categories of data.)

A. Chest x-ray: The chest X-ray showing left lower lobe density confirms the pneumonia diagnosis and supports the need for antibiotic therapy. It does not represent a contraindication to cefazolin administration. B. WBC count: An elevated WBC count of 16,000/mm³ indicates infection and inflammation. This finding supports the need for antibiotic therapy and is not a reason to withhold the initial dose. C. Allergies: The client has a reported allergy to penicillin. Cefazolin is a first-generation cephalosporin, which can cross-react in clients with a penicillin allergy, potentially causing severe hypersensitivity reactions. The provider must be notified before administration to determine if the medication is safe or if an alternative antibiotic is needed. D. Temperature: The client’s fever (39.3°C / 102.8°F) is consistent with active infection. While it indicates illness severity, it does not contraindicate cefazolin administration and is expected in pneumonia management.