Why is it important to perform CPR immediately?

Performing CPR immediately is crucial because it helps maintain blood flow to the brain and vital organs during cardiac arrest. When the heart stops beating, blood ceases to circulate, and the body's organs, especially the brain, become deprived of oxygen. This can lead to irreversible damage within just a few minutes. By administering CPR right away, rescuers compress the chest, which creates artificial circulation, allowing oxygenated blood to reach the brain and other essential organs. This can significantly increase the chances of survival and minimize the risk of long-term complications from brain injury or organ damage. The prompt delivery of CPR is essential to buy time until professional medical responders arrive and can take over the situation.

While preventing further injury, relieving choking, and calming a person down are all important aspects of first aid, they are not the primary reasons for the urgency of CPR in the context of a cardiac arrest scenario.