Chain of survival
Early defibrillation

While CPR keeps blood flowing artificially, rapid defibrillation is the only way to restart the heart and reset it to a healthy rhythm. And while only 40% of adults experiencing cardiac arrest receive CPR, fewer than 12% receive shocks from an AED before EMS arrival. What is more, the chances of the patient's survival decrease by as much as 10% with every minute that they do not receive rapid defibrillation.
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