CPR, or cardiopulmonary resuscitation, is a life-saving technique that can help maintain blood circulation and oxygen flow to the brain and other vital organs when someone's heart has stopped beating or they are not breathing. It's important to note that CPR itself does not restart a stopped heart, but it can buy time until medical help arrives. In some cases, a combination of CPR and the use of an automated external defibrillator (AED) can be effective in restarting the heart by delivering an electric shock to the heart muscle. When a person experiences a sudden cardiac arrest, their heart may stop beating effectively, and they will require a medical procedure called defibrillation to restore a normal heart rhythm. CPR can help keep the victim alive until defibrillation can be performed. It's crucial to start CPR immediately and to call emergency services as soon as possible. read more >>

CPR alone is unlikely to restart the heart. Its main purpose is to restore partial flow of oxygenated blood to the brain and heart. The objective is to delay tissue death and to extend the brief window of opportunity for a successful resuscitation without permanent brain damage.read more >>