The American Heart Association has released new CPR guidelines that change A-B-C (airway, breathing, compressions) to C-A-B (compressions first) except for newborn babies.
The main take-away from the new guidelines is that action is more important than assessment in cardiac arrest. No more looking, listening, feeling — start compressions immediately. Push a little harder (at least 2 inches); push a little faster (at least 100 compressions a minute).