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': 'Early stage of trauma is characterized by - \nSelect and explain. \nA. Catabolism, B. Anabolism, C. Glycogenesis, D. Lipogenesis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: • Injury Phase (Phase of catabolism):\n−− Begins at the time of injury and lasts for 2-5 days\n−− Phase of hypermetabolism\n−− Stress hormones (cortisol, catecholamines and glucagon) and volume control hormones (renin-angiotensin, aldosterone and ADH) are increased. This leads to proteolysis, lipolysis, hyperglycemia and wound healing despite of negative nitrogen balance.\n• Turning Point:\n−− Transient period marked physiologically by turning off of the neuroendocrine response and clinically by the appearance of getting well.\n• Early Anabolic Phase:\n−− Marked by gain in muscular strength or positive nitrogen balance.\n• Late Anabolic Phase:\n−− Marked by gain in weight and body fat or positive caloric balance', 'role': 'assistant'}]