This article quotes new medical research showing victims were 2.2 times less likely to suffer brain damage if they were among the 11 percent of patients who got chest compressions only — without mouth-to-mouth resuscitation.

For those of you who have made the step to learn CPR in preparation for that day when you see an adult collapse (children still need mouth to mouth) remember:

"The main reason why the AHA teaches mouth-to-mouth resuscitation is that some people go into cardiac arrest because they have not been getting sufficient air. Such patients include drowning victims, for example, and victims of drug overdose. These patients do not have enough oxygen in their blood, and truly need mouth-to-mouth resuscitation.

But the vast majority of people who collapse have been breathing normally before their hearts stopped. That means that they have enough oxygen in their blood to survive until medical help arrives — if someone gives them continuous chest compressions..."