Call 911 and start CPR (cardiopulmonary resuscitation) if someone goes into cardiac arrest. Cardiac arrest is a condition when the heartbeat has stopped and the person isn’t responsive. CPR doesn't restart the heart, but it keeps the person alive until medical help arrives.

An easy-to-use device called an AED (automated external defibrillator) is available in many public places and can be used by almost anyone to treat cardiac arrest. This device works by shocking the heart back into a normal rhythm.

Here’s how to use an AED:

1. Check responsiveness:

•           For an adult or older child, shout and shake the person to confirm whether they’re unconscious. Do not use AED on a conscious person.

•           For an infant or young child, pinch their skin. Never shake a young child.

•           Check breathing and pulse. If absent or uneven, prepare to use the AED as soon as possible.

2. Prepare to use AED:

•           Make sure the person is in a dry area and away from puddles or water.

•           Check for body piercings or outline of an implanted medical device, such as a pacemaker or implantable defibrillator.

•           AED pads must be placed at least 1 inch away from piercings or implanted devices.

3. Use AED:

For newborns, infants, and children up to age 8, use a pediatric AED, if possible. If not, use an adult AED.

•           Turn on the AED.

•           Wipe the chest dry.

•           Attach pads.

•           Plug in a connector, if necessary.

•           Make sure no one is touching the person.

•           Push the “Analyze” button.

•           If a shock is advised, check again to make sure no one is touching the person.

•           Push the “Shock” button.

•           Start or resume continue compressions.

•           Follow AED prompts.

4. Continue CPR:

•           After 2 minutes of CPR, check the person’s heart rhythm. If it’s still absent or uneven, give them another shock.

•           If a shock isn’t needed, continue CPR until emergency help arrives or the person begins to move.

•           Stay with the person until help arrives.