**Hands Only CPR, AED and CPR

I was introduced to a three important things at a training I am doing for employment for the Emergency Response Team at work.  First is the importance of getting someone to Automated External Defibrillator as quickly as possible.  If someone who has gone into cardiac arrest receives this shock within five minutes, their chance of survival is over 80 percent.  That is pretty good odds.  The odds go down over time, but are still pretty high even after five minutes.
The second thing I learned is Hands only CPR.  There are only two steps in this CPR, 1. call 911 and start chest compressions.  The beat of "Staying Alive" is the perfect rhythm.
The third thing learned is that even in regular CPR, the first step is now chest compressions rather than airway and breathing.  You ask someone to call 9-11 or do so yourself, then the order is now chest compressions, airway and then breath.  For an adult it is 30 chest compressions, then open the airway, quick check for breathing, then two breaths, followed by 30 chest compressions.  This change was made in 2010.  After doing this five times, then you check for signs of life, and then continue until relieved by trained medical personnel, or you can't anymore due to exhaustion.  You should not do breathing if you do not have a shield between yourself and the person who has passed out.  In this case, Hands only CPR is preferred.
http://www.heart.org/HEARTORG/CPRAndECC/HandsOnlyCPR/Hands-Only-CPR_UCM_440559_SubHomePage.jsp