Abstract 16074: Modeling a Novel Hypothetical Use of Postal Collection Boxes as Automated External Defibrillator Access Points
Introduction: Optimizing placement of Automated External Defibrillators (AED) can increase the chances of survival during an Out of Hospital Cardiac Arrest (OHCA). Using Postal Collection Boxes (PCB) as locations for AEDs could potentially enhance accessibility and streamline maintenance, although the impact of using these locations on OHCA bystander response times is not known. In the present study, we sought to investigate this AED location strategy with a map-based simulation approach.
Hypothesis: We hypothesized that using PCBs for placement of public AEDs would decrease distance traveled to an OHCA compared to current public AED locations and that combining both locations would further decrease this distance. We also hypothesized that AEDs at PCBs would lead to an increase in AED coverage area.
Methods: OHCAs locations between 2009-2014 were obtained from the Pittsburgh Site of the Resuscitation Outcome Consortium (n=2912). AED locations were collected from the HeartMap Challenge and the Pittsburgh Pulse Program (n=531). PCB locations were obtained from the United States Postal Service and geocoded (n=496) to latitude/longitude coordinates. Spatial analysis was conducted using Quantum GIS (QGIS). Linear distance from each OHCA to the nearest current AED, nearest PCB and nearest of either was calculated and converted into feet using MMQGIS. Average distance was compared between each method to determine whether current locations, PCBs, or the combination of the two offered a superior overall location strategy. AED coverage area was assessed as the proportion of census tracts that had an AED for each method.
Results: Mean distance was 1449.22 feet (Median=1165.88 feet) from OHCA to nearest AED; 1168.05 feet (Median=747.48 feet) to the nearest PCB equipped with an AED, and 884.88 feet (Median=606.11 feet) the nearest AED or PCB. Of all OHCAs, 53.6% experienced a decrease in distance from an AED using PCBs as AED locations. AED coverage increased from 68.6% of all census tracts containing AEDS to 94.8% with the addition of PCBs.
Conclusion: Overall distance decreases when using PCB as a possible source for an AED along with current locations. AED coverage increases when AEDs are located at PCBs.
Author Disclosures: S. Srinivasan: None. C.G. Vanek: None. D.D. Salcido: Research Grant; Significant; Laerdal Foundation Small Grant, Henry L. Hillman Foundation Project Grant, NIH/NHLBI Career Development in Emergency Medicine Program (K12HL109068).
- © 2016 by American Heart Association, Inc.