Most of us have learned at least the basics of cardiopulmonary resuscitation, or CPR, at some point in our lives. The layperson's--and sometimes the doctor's--emergency treatment of choice when someone goes into cardiac arrest, CPR involves using the heel of the hand to push deeply into the victim's chest, while administering periodic mouth-to-mouth breaths. But the sobering fact is that the procedure just doesn't work very well; in fact, almost 95% of cardiac-arrest victims die before they reach a medical center. In light of a stat like that one, the American Heart Association (AHA) has decided to change the commonly practiced CPR...
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