What do the terms "cardio" and "pulmonary" refer to in CPR?

The terms "cardio" and "pulmonary" in CPR specifically refer to the heart and the lungs, respectively. "Cardio" is derived from the Greek word "kardia," meaning heart, while "pulmonary" comes from the Latin word "pulmonalis," which translates to lung. Therefore, CPR deals with maintaining and restoring blood circulation and breathing when these functions have ceased, which directly involves the heart and lungs.

Understanding this terminology is crucial because it highlights the primary focus of CPR: the revival of these two essential systems. The techniques employed in CPR aim to ensure that oxygenated blood continues to circulate to vital organs, particularly the brain, and that the person can continue to breathe effectively or be assisted in doing so until advanced medical help arrives.