Which statement best describes the purpose of prophylactic antibiotics in surgery?

• A. To prevent infection
• B. To treat established infection
• C. To promote wound healing
• D. To reduce anesthesia need

Answer: (A)

Prophylactic antibiotics in surgery are used to prevent infection by lowering the bacterial load at the time of incision, reducing the risk that bacteria introduced during the procedure will establish an infection. The goal is to prevent surgical-site infections, especially in higher-risk surgeries or in patients with factors that raise infection risk. They’re typically given just before the incision and chosen to cover the most likely skin flora. This is distinct from treating a known infection, which relies on therapeutic antibiotics guided by culture and symptoms, and it’s not a method to speed wound healing or to reduce anesthesia needs. In practice, a short, appropriately timed prophylactic dose (often a single preoperative administration) aims to prevent infection and support a smoother recovery.