An elderly client presents to the Emergency room with sepsis. The provider immediately starts the client on a broad-spectrum antibiotic but then changes the antibiotic when the culture and sensitivity results come back. The new antibiotic would be considered what type of antibiotic therapy?

A. Definitive therapy.: Definitive therapy is initiated after the causative organism has been identified through culture and sensitivity testing. The provider selects an antibiotic specifically targeted to the known pathogen, ensuring optimal effectiveness and reducing the risk of antibiotic resistance. B. Empiric therapy.: Empiric therapy refers to starting broad-spectrum antibiotics before the exact pathogen is identified, based on the most likely cause of infection. This is what the client initially received upon presentation with sepsis, before culture results were available. C. Prophylactic therapy.: Prophylactic therapy involves administering antibiotics to prevent infection rather than treat an existing one. It is commonly used before surgical procedures or in immunocompromised clients at high risk for infection, not in active sepsis cases. D. Palliative therapy.: Palliative therapy aims to relieve symptoms and improve comfort in clients with terminal or chronic conditions. It does not treat the underlying infection or alter disease progression.