This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
[{'content': 'Prevention of surgical wound infection done by ? \nSelect and explain. \nA. Pre-op shaving, B. Pre-op antibiotic therapy, C. Monofilament sutures, D. Wound apposition', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Giving antibiotics prior to surgery (prophylactic antibiotics) one hour before surgery has been identified as an intervention for prevention of surgical site infections. Shaving is now avoided and clipping of hair is preferred. Preop bath, Blood glucose control, and maintaining normothermia (esp in colorectal surgery) are other useful measures.', 'role': 'assistant'}]