September 12, 2016
In 2011, the AHA found that 326,200 people experienced out-of-hospital cardiac arrests in the United States. Of those treated by EMS, 10.6 percent survived, with the survival rate increasing to 31.4 percent when in the presence of bystanders.
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According to the American Heart Association (AHA), most people who experience cardiac arrest die because they don't receive immediate cardiopulmonary resuscitation (CPR).