Review
Remember - you may be the victim's only chance of survival. You can increase that chance by 40% simply by administering Cardiopulmonary Resuscitation (CPR).
Check the victim for responsiveness by shouting "Are you Okay?" If there is no response, Call 911 and return to the victim. In most locations the emergency dispatcher can assist you with CPR instructions. Pulse Location - Carotid artery (neck)
Compression
If the victim is not breathing and/or gasping for air, and has no pulse, begin chest compressions. Push down with 2 hands 2 inches 30 times right between the nipples. Pump at the rate of 100-120 per minute, faster than once per second.
Airways
Tilt the head back and listen for breathing.
Breathing
If not breathing normally, pinch nose and cover the mouth with yours and blow until you see the chest rise. Give 2 breaths. Each breath should take 1 second.