Sudden cardiac arrest (SCA) is a public health crisis— affecting more than 356,000 people outside hospitals each year, including over 7,000 youth under age 18—but death can be averted if people nearby act quickly. Today, only one in 10 victims survives, but with immediate CPR and use of an AED, survival rates can triple. If you see an adult or teen suddenly collapse, and the person is unresponsive and not breathing normally, Call 911, Push hard and fast on the chest, and use an AED as soon as it arrives at the scene.