In 2005 the American Heart Association changed its recommendations about CPR. In the case of a witnessed cardiac arrest, they no longer suggested using mouth to mouth resuscitation. Now in a study reported in the Journal Watch Emergency Medicine, it appears that a victim is almost twice as likely to survive an out-of-hospital cardiac arrest with effective chest compressions alone compared to the older routine of mouth to mouth plus chest compressions.
Part of the original rationale for changing the recommendations was that not only is it more effective (which this study supports) but it will make it more likely that people will actually step up to the plate and start basic CPR while waiting for expert help to arrive. Tell your kids about this and watch this two minute YouTube clip about how to do chest compressions. It could save a life, maybe even your own!