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: Medicine
[{'content': 'When you come across an unresponsive patient, the next step is: \nSelect and explain. \nA. Shout and shake the patient, B. Check for carotid pulsations, C. Secure the airway, D. Start chest compressions', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Shouting and shaking is checking for responsiveness: The patient is already described as unresponsive, i.e., not responding\xa0to shouts or shakes.\nThe next step in an unresponsive patient is to check for carotid pulsations; if not palpable, consider that the patient is in cardio-respiratory arrest and immediately initiate CPR.\nCPR is initiated as Circulation -> Airway -> Breathing (CAB), not ABC any longer.', 'role': 'assistant'}]