Why is antibiotic prophylaxis used in surgery?

Why is antibiotic prophylaxis used in surgery?

• A. To treat established infections postoperatively.
• B. To prevent surgical site infections by achieving sufficient tissue concentrations at incision.
• C. To reduce postoperative pain.
• D. To speed wound healing with no antibiotic effect.

Answer: (B)

The goal of antibiotic prophylaxis in surgery is to prevent surgical site infections by ensuring sufficient antibiotic levels in the tissues at the moment the incision is made. Bacteria can be introduced during the operation, and having the drug already present at effective concentrations in the target tissues helps stop those organisms from establishing an infection as the wound is created. Timing matters: the antibiotic should reach adequate tissue levels right around the time of incision, typically within an hour before the incision for most agents, with redosing during long procedures to maintain protective levels. Prophylaxis is limited to the perioperative period and is not intended to treat established infections after surgery, nor to hasten wound healing or reduce postoperative pain.

The goal of antibiotic prophylaxis in surgery is to prevent surgical site infections by ensuring sufficient antibiotic levels in the tissues at the moment the incision is made. Bacteria can be introduced during the operation, and having the drug already present at effective concentrations in the target tissues helps stop those organisms from establishing an infection as the wound is created. Timing matters: the antibiotic should reach adequate tissue levels right around the time of incision, typically within an hour before the incision for most agents, with redosing during long procedures to maintain protective levels. Prophylaxis is limited to the perioperative period and is not intended to treat established infections after surgery, nor to hasten wound healing or reduce postoperative pain.