This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Universal precautions to be observed by surgeons for the prevention of hospital acquired HIV infection include the following except \nSelect and explain. \nA. Wearing gloves and other barrier precaution, B. Washing hands on contamination, C. Handling sharp instruments with care, D. Preoperative screening of all patients for HIV', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Universal\xa0 precautions have been drawn up by the CDC in the United States and largely adopted by the National Health Service (NHS) in the UK (in summary):\n\nUse of a full face mask ideally, or protective spectacles;\nUse of fully waterproof, disposable gowns and drapes, particularly during seroconversion;\nBoots to be worn, not clogs, to avoid injury from dropped sharps;\nDouble gloving needed (a larger size on the inside is more comfortable);\nAllow only essential personnel in theatre;\nAvoid unnecessary movement in theatre;\nRespect is required for sharps, with passage in a kidney dish;\nA slow\xa0 meticulous\xa0 operative\xa0 technique\xa0 is\xa0 needed\xa0 with minimised bleeding.\n\nKey Concept:\nUniversal precautions do not include the preoperative screening of patients for HIV.\nReference: Bailey & Love’s short practice of surgery , 27th\xa0 ed page no 52', 'role': 'assistant'}]