A patient is admitted to the hospital for treatment of pneumonia after complaining of high fever and shortness of breath. The patient was not able to produce sputum for a culture. The nurse will expect the patient's provider to order which of the following?

A. a narrow-spectrum antibiotic: Narrow-spectrum antibiotics target specific bacteria and require knowledge of the causative organism. Since the patient was unable to produce a sputum culture, the exact pathogen is unknown, making narrow-spectrum therapy less appropriate initially. B. multiple antibiotics: While combination therapy can be used in severe cases or for resistant organisms, it is not always the first choice. Using multiple antibiotics unnecessarily increases the risk of adverse effects and antibiotic resistance. C. the pneumococcal vaccine: The vaccine is preventive and does not treat an active infection. Administering it during acute pneumonia would not address the current bacterial infection. D. a broad-spectrum antibiotic: Broad-spectrum antibiotics are appropriate when the causative pathogen is unknown. They cover a wide range of potential bacteria, providing effective initial treatment while culture results, if obtainable later, guide targeted therapy.