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: Orthopaedics
[{'content': 'Polytrauma patient with the open bleeding wound of the right thigh should be managed first of all by - \nSelect and explain. \nA. Tourniquet application, B. Tight bandage application, C. Airway maintenance, D. Blood transfusion', 'role': 'user'}, {'content': "Answer: B \nExplanation: Now you must be thinking, why not airway maintenance is the answer, Read the following facts and you will have no confusion.\nManagement of injuries is prioritized on treating most immediately life-threatening injuries first, traditionally following ABCDE sequence.\nThe exception to this is the casualty suffering external, peripheral haemorrhage.\nMilitary experience has shown that bleeding from limb wounds is a leading cause of combat casualty deaths, a significant proportion of which are avoidable.\nThis has led to the development of CABC sequence in patients presenting with external hemorrhage, when first 'C' stands for catastrophic hemorrhage.\nLife threatening, external hemorrhage is controlled, and then the usual ABC sequence is followed.\nOver bleeding should be temponaded with dressing and firm pressure.", 'role': 'assistant'}]