Hi, I am a student nurse and wanted to ask about what happens in an emergency. I understand if I find someone who seems to have a cardiac arrest to check for breathing, if no response and no breathing then pull the emergency buzzer it they are for resus. Should I then start CPR or should I call 2222? I'm not sure who is responsible for the 2222 call. I think uni has confused me a little. I have never seen a cardiac arrest but want to feel prepared! Thanks