Abstract 11082: Strategic Placement of Automated External Defibrillators at Twenty-Four-Hour Grocery Chain Stores
Background: Mortality of out-of-hospital cardiac arrest (OHCA) is high and public access early defibrillation (PAD) improves survival.
Objectives: To evaluate the feasibility of strategic placement of automated external defibrillators (AED) at 24-hour grocery chain stores in metropolitan city.
Material and Methods: A prospective five-year observational database of non-traumatic OHCA was assessed. Using geospatial information technology, we analyzed the locations of the largest chain of 24-hour grocery store, of prehospital ambulance stations, of total OHCA events, and of OHCA only at ground level. We presume to equip one AED in each designated store. Bystanders may get an AED from the nearest store to OHCA location. The buffer coverage of OHCA locations within a 100, 200, and 300-meter buffer radius (R) to the stores designated at that buffer set were compared.
Results: There were a total of 8,094 OHCA locations, with 3,192 subjects at ground level. Among totally 677 stores in chain, the efficient number of stores designated for placing AED at 100-m buffer R would be 576; it would be 542 stores at 200-m R and 396 at 300-m R individually. The buffer coverage of total OHCA locations was 29.6% (n=2,396) at 100-m R by placing 576 AEDs, 69.2% (n=5,598) at 200-m R by 542 AEDs, and 86.5% (n=7,000) at 300-m R by 396 AEDs. The buffer coverage of OHCA at ground level was 26.8% (n=856) at 100-m R, 62.1% (n=1,981) at 200-m R, and 80.5% (n=2,570) at 300-m R. The averaged OHCA locations per AED covering were 1.5 to 17.7 in 5 years. For 17.7% (n=1,380) of OHCA locations not covered within 1.5-kilometer distance to ambulance stations (5-minute for ambulance response time), 45% (n=621) of them were covered within 100-m to 24-hour stores.
Conclusions: Placing AEDs at 24-hour grocery stores in metropolitan city is highly efficient for OHCA location coverage, and complementary to area not covered by paramedics. It may provide bystanders easy and prompt access to an AED to improve usage, and is pivotal for PAD.
- Sudden cardiac death
- Cardiopulmonary resuscitation
- Emergency care
- Healthcare delivery systems
- Electric countershock
- © 2011 by American Heart Association, Inc.