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CPR stands for cardio pulmonary resuscitation

 

Cardio means heart

Pulmonary means lungs

Resuscitation means to save

 

CPR is used when someone is unresponsive.  

Chest compressions help to move the blood with oxygen through the body.  

It is not as good as the heart pumping blood to the body by itself, but it still gets some blood with oxygen to the body

 

AED means automatic external defibrillator

 

The AED machine can quickly check the heart rhythm.

Ift the heart is not working right, it can shock the heart to try and get the heart back into a normal rhythm. It should only be used if someone is unresponsive