If AED treatment of SCA works, why are survival rates low?
Chances of survival decreases by 7 percent to 10 percent for each minute that passes without defibrillation Only 1 out of 20 SCA victims survive. Many of these lives could be saved if defibrillation is provided faster. Studies show that defibrillating victims within 3 minutes of collapse greatly improves cardiac arrest survival rates. Because the average response time for an ambulance is 8 to15 minutes, by the time emergency medical services arrives, victim’s are unlikely to survive. 7.