It used to be following your ABC’s: airway, breathing and chest compressions. Now, Compressions come first, only then do you focus on Airway and Breathing. The only exception to the rule will be newborn babies, but everyone else whether it’s infant CPR, child CPR or adult CPR will get chest compressions before you worry about the airway.

• The key to saving a cardiac arrest victim is action, not assessment.
• Trust your gut. If you have to hold your cheek over the victim’s mouth and carefully try to detect a puff of air, it’s a pretty good bet she’s not breathing very well, if at all.
• Push a little harder push at least 2 inches deep on the chest for adult CPR.

• Push a little faster at least 100 compressions per minute. At that rate, 30 compressions should take 18 seconds.
• Hands Only CPR. The untrained lay rescuers to do Hands Only CPR on adult victims who collapse in front of them.
• Recognize sudden cardiac arrest.
• CPR is the only treatment for sudden cardiac arrest.
• Don’t stop pushing. Every interruption in chest compressions interrupts blood flow to the brain, which leads to brain death if the blood flow stops too long.
• It takes several chest compressions to get blood moving again. Keep pushing as long as you can.
• Push until the AED is in place and ready to analyze the heart.
• When it is time to do mouth to mouth, do it quick and get right back on the chest.

Read More on http://firstaid.about.com/od/cpr/qt/09_2010_CPR_Guidelines.htm