What should I do if I think the person with me is having a heart attack?

If you understand the "chain of survival," which includes knowing how to perform Cardiopulmonary Resuscitation (CPR), you'll know where to start. You could possibly prevent the cardiac arrest death of a loved one, friend or neighbor by knowing when to phone 9-1-1 and when to begin CPR. Early access to trained emergency responders through 9-1-1, knowing how and when to begin CPR, and getting early advanced care for a heart attack or stroke victim can save his or her life.More specifically, the American Heart Association 's adult chain of survival has four links of actions to perform should you be with an adult who becomes suddenly unresponsive:

  • Phone 9-1-1.
  • Begin CPR.
  • Perform defibrillation (performed by emergency responders).
  • Transfer to a hospital.