<prompt> When you come across an unresponsive patient, the next step is:Shout and shake the patientCheck for carotid pulsationsSecure the airwayStart chest compressions  <response>: Shouting and shaking is checking for responsiveness: The patient is already described as unresponsive, i.e., not responding to shouts or shakes.The 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.CPR is initiated as Circulation - Airway - Breathing CAB, not ABC any longer. 