How to give a first aid help to a victim of electric shock?

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• Don't touch victim. The person may still be in contact with the electrical source. Touching the person may pass the current through you.
• Turn off the source of electricity, if possible. If not, move the source away from you and the person, using a dry, nonconducting object made of cardboard, plastic or wood.
• Check for signs of circulation (breathing, coughing or movement). If absent, begin cardiopulmonary resuscitation (CPR) immediately.
• Prevent shock. Lay the person down and, if possible, position the head slightly lower than the trunk with the legs elevated.
• check for internal injuries, even if he or she has no obvious signs or symptoms.
• transfer him to hospital 

cardiopulmonary resuscitation CPR emergency procedure  performed in an effort to manually preserve intact brain function until further measures are taken to restore spontaneous blood circulation and breathing in a person who is in cardiac arrest