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Cardiopulmonary resuscitation (CPR): First aid

Treatment

Before starting CPR, check:

  • Is the environment safe for the person?
  • Is the person awake, alert and aware of the surroundings? This is called conscious.
  • If the person is not conscious, tap or shake the person's shoulder and ask loudly, "Are you OK?"
  • If the person doesn't react and someone else is with you who can help, have one person call 911 or the local emergency number and get an AED if one is nearby. Have the other person begin CPR.
  • If you are alone and have a phone with you, call 911 or your local emergency number before you start CPR. If your phone has a speaker mode, turn it on. If you are close to an AED, get it.
  • Turn on the AED machine. It tells you what to do. The machine comes with sticky pads. Place them on the bare skin of the person's chest. Give the person one shock if the machine tells you to. Then start or restart CPR.