Which term describes a drug that prevents pain during surgery and can be administered locally or systemically?

• A. Gout
• B. Anesthetic
• C. Achilles tendon
• D. Physical therapy

Answer: (B)

Pain relief for surgical procedures is achieved with anesthesia, which refers to drugs designed to prevent pain and, depending on the type, either numb a specific area or render the patient unconscious. Anesthetic drugs can be applied locally to block nerve signals in a small region (local anesthesia) or given systemically to affect the whole body (general anesthesia), ensuring the patient doesn’t feel pain during the operation. Local anesthetics work by blocking voltage-gated sodium channels in nerves, stopping impulses from reaching the brain, while systemic anesthetics alter brain activity to produce unconsciousness, analgesia, and muscle relaxation as needed. The other terms listed—gout, the Achilles tendon, and physical therapy—are not drugs used to prevent pain during surgery.