 Automated
external defibrillators (AEDs)
- AED programs equip conventional ambulances with
automated external defibrillators (de-FIB'rih-la-torz). Only an estimated
30 percent of emergency medical systems (E.M.S.) in the United States
have put AED programs in place.
- According to a recent study, AEDs now in use are
90 percent sensitive for ventricular fibrillation and 90-95 percent
specific for other heart rhythms.
- The first out-of-hospital defibrillation device
weighed 110 pounds; today they weigh less than 10 pounds.
Increased survival with AEDs
- In cities where CPR training is widespread and EMS response is rapid,
the survival rate increased from 7 percent to 26 percent when AEDs were
available to first responders.
- In cities where defibrillation is provided within 5 to 7 minutes,
the survival rate from cardiac arrest is as high as 49 percent.
- In cities in which EMS response times are prolonged because of traffic
congestion and high-rise buildings (and in which bystander CPR is infrequent),
longer-term survival outcome is 1-2 percent.
- A Rochester, Minnesota, study showed remarkable survival rates when
police vehicles were equipped with automated external defibrillators.
Twenty-one of 44 persons with out-of-hospital cardiac arrest were long-time
survivors. Of these 44 victims, 14 had initial defibrillation by the
police force. Of these 14, 10 survived and were discharged. The overall
survival rate of 21 of 44 victims can be compared with the survival
rate in New York, where 26 of 2,329 victims survived.
- In one case, AEDs were mounted 1 minute apart in plain view at Chicago's
O'Hare and Midway airports in June 1999. In the first 10 months, 14
cardiac arrests occurred with 12 of the 14 victims in ventricular fibrillation.
Nine of the 14 victims (64 percent) were revived with an AED and had
no brain damage.
Americanheart.org
The City of Katy has placed AED’S on fire trucks, police cars,
public works vehicles, and in some government buildings.
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