Cardiac arrest with epinephrine, norepinephrine, dopamine, sodium bicarbonate, amiodarone, etc. is effective, the specific efficacy varies from person to person. When the patient is judged to be in cardiac arrest, cardiopulmonary resuscitation (CPR) should be performed immediately, and venous access should be opened as soon as possible while CPR is being performed. Epinephrine is the drug of choice, and the routine use is 1mg intravenous push, repeated every 3~5 minutes, and use saline to flush the tube, to ensure that the drug can reach the heart to play a role. For patients with cardiac arrest accompanied by low blood pressure, antihypertensive drugs should be given, norepinephrine, dopamine, dobutamine, etc. can be used. If cardiac arrest is prolonged and is not treated with cardiopulmonary resuscitation, electrical defibrillation, or vasoconstrictor medications, then sodium bicarbonate may be considered for acid correction. If ventricular fibrillation persists after 2 defibrillations plus cardiopulmonary resuscitation and epinephrine, the addition of amiodarone may be considered as antiarrhythmic. The exact medication to be used will depend on the patient’s condition during resuscitation. Cardiac arrest, must immediately call 120 hospital rescue, if you know CPR can wait for 120 during the chest compressions.