What is a common treatment for a cardiac arrest situation in a patient?

In a cardiac arrest situation, the most critical immediate response is to begin CPR. This action helps maintain blood flow to the brain and vital organs when the heart is no longer effectively pumping blood. High-quality chest compressions are essential in providing some level of circulation to support the patient's chances of survival until advanced care can be provided.

While administering oxygen can be important in broader emergency contexts, it does not replace the necessity of initiating CPR immediately in a cardiac arrest. Stabilizing the patient and administering pain relief are not applicable in this acute scenario, as the priority is to restore circulation rather than address pain or stabilization, which can occur later when the patient's heart rhythm is restored. Thus, the prompt initiation of CPR is the best evidence-based practice in the treatment of cardiac arrest.