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Cardiopulmonary resuscitation (CPR): First aid

Treatment

Before starting CPR, check:

  • Is the environment safe for the person?
  • Is the person conscious or not conscious?
  • If the person appears to be not conscious, tap or shake their shoulder and ask loudly, "Are you OK?"
  • If the person doesn't respond and you're with someone else who can help, have one person call 911 or the local emergency number and get an AED if one is available. Have the other person begin CPR.
  • If you are alone and have immediate access to a phone, call 911 or your local emergency number before starting CPR. Get an AED if one is available.
  • As soon as an AED is available, deliver one shock if instructed by the device. Then start CPR.