This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Medicine
[{'content': 'What is the emergent management of tension pneumothorax? \nSelect and explain. \nA. Chest X-ray, B. Emergency room thoracotomy if unstable, C. Immediate needle thoracostomy in 2nd intercostal space, D. Tube thoracostomy in 5th ICS', 'role': 'user'}, {'content': "Answer: C \nExplanation: Tension pneumothorax is a medical emergency.In case of tension pneumothorax,immediate release of the positive pressure by inseion of a large-bore needle into the pleural space through the second anterior intercostal space is beneficial.If the tension is not relieved,the patient is likely to die from inadequate cardiac output, or marked hypoxaemia. Harrison's medicine-18th edition,page no:2181.", 'role': 'assistant'}]