During CPR, more chest compressions save more lives

If you are uncomfortable giving mouth-to-mouth resuscitation, you may actually do a better job of cardiopulmonary resuscitation (CPR) if you do less mouth-to-mouth, a recent study suggests.
CPR consists of chest compressions and mouth-to-mouth resuscitation, and is performed on people whose hearts have stopped beating. Mouth-to-mouth resuscitation moves oxygen into the lungs of someone who can not breathe on his own, while chest compressions move blood carrying that oxygen to the heart and the brain.
The findings emphasise that "the chest compressions you do on a loved one are one of the most important things that can be done," Dr. Jim Christenson, one of the authors of the study, said in a statement.
"If you feel rusty or are not confident giving mouth-to-mouth ventilation along with chest compressions then just do chest compressions," he continued. "Even by themselves, chest compressions can make a difference."

Source: Circulation: Journal of the American Heart Association