What is the first action to take for a patient in cardiac arrest?

Beginning CPR is the appropriate first action for a patient in cardiac arrest because it serves as an immediate means to maintain blood circulation and oxygenation to vital organs. In a cardiac arrest situation, the heart is either not beating effectively or has stopped beating entirely, which deprives the brain and other organs of oxygen. Initiating CPR immediately provides chest compressions that can help to circulate any remaining blood, prolonging the time that the brain and other organs can survive without oxygen.

By performing chest compressions, you are helping to create artificial circulation, which is crucial while waiting for advanced medical intervention, such as defibrillation or medications. This response is based on current guidelines from organizations like the American Heart Association, which prioritize immediate action to support the patient’s life.

The other options, while they may be necessary components of emergency care, do not address the immediate need for circulation and oxygenation that CPR provides. Administering oxygen, starting an intravenous line, or providing spinal immobilization can be conducted after CPR has been initiated and the situation is stabilized.