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': 'Which of the following is the indication for emergency thoractomy: \nSelect and explain. \nA. Output of > 1 L at the time of intercostal chest tube insertion, B. > 200 ml of blood drained by chest tube over 3 consecutive hours, C. Penetrating chest trauma, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Indications for emergency thoracotomy:-\n\n> 1.5 L of output at the time of chest tube insertion.\n> 200 ml/hr of blood drained by chest tube over 3 consecutive hours.\nHemodynamic compromise.', 'role': 'assistant'}]