What if your CPR instructor taught you to call 911 before doing on an unresponsive adult victim The single most important goal of this first approach is?

To start chest compressions as quickly as possible

- Chest compressions are more likely to be effective and save a life if they are started within the first few minutes of cardiac arrest.

- Defibrillation is the only definitively life-saving intervention once a patient is in cardiac arrest, but a defibrillator may not always be available.

- CPR can help to circulate blood and oxygen, and it can also help to keep the heart rhythm regular until defibrillation can be performed.