University of Pittsburgh School of Medicine, Pittsburgh, PA, United States.
University of Pittsburgh School of Computing and Information, Pittsburgh, PA, United States.
Resuscitation. 2017 Nov;120:26-30. doi: 10.1016/j.resuscitation.2017.08.220. Epub 2017 Aug 25.
Optimizing placement of Automated External Defibrillators (AED) can increase survival after an out-of-hospital cardiac arrest (OHCA). Using postal collection boxes (PCB) as locations for AEDs could potentially enhance accessibility and streamline maintenance. In this study, we modeled the hypothetical effects of deploying AEDs at PCB locations.
We hypothesized that PCB-AEDs would increase AED coverage overall and in residential areas, and reduce the distance from OHCA to an AED.
AEDs in Pittsburgh, PA were identified by the University of Pittsburgh Resuscitation Logistics and Informatics Venture (n=747). PCB locations were obtained from the United States Postal Service (n=479). OHCA locations from 2009 to 2014 were obtained from the Pittsburgh site of the Resuscitation Outcomes Consortium. AED coverage assuming a ¼ mile radius around each AED was estimated for known AEDs, PCB-AEDs (hypothetical AED locations), and known AEDs augmented by PCB-AEDs, both overall and for residential and non-residential zones. Linear distance from each OHCA to the nearest AED was calculated and compared between the sets.
The set of known AEDs augmented with PCB-AEDs covered more of the city overall (55% vs 30%), as well as greater proportions of residential (62% vs 27%) and non-residential areas (45% vs 30%). The median distance from OHCA to AED was significantly shorter when known AEDs were augmented with PCB-AEDs (0.12mi vs 0.32mi; p=0.001).
Augmenting existing publicly accessible AEDs with AEDs deployed at PCBs can increase AED spatial coverage in both residential and non-residential areas, and reduce the distance from AED to OHCA.
优化自动体外除颤器（AED）的放置位置可以提高院外心脏骤停（OHCA）后的存活率。使用邮政收集箱（PCB）作为 AED 的位置可以提高可及性并简化维护。在这项研究中，我们模拟了在 PCB 位置部署 AED 的假设效果。
我们假设 PCB-AED 将总体上增加 AED 覆盖范围，并增加住宅区域的 AED 覆盖范围，并减少从 OHCA 到 AED 的距离。
匹兹堡大学复苏物流和信息学风险投资公司确定了匹兹堡的 AED（n=747）。从美国邮政服务（n=479）获得 PCB 位置。从 2009 年到 2014 年，从复苏结果联盟的匹兹堡站点获得了 OHCA 位置。在每个 AED 周围 ¼ 英里的半径内，对已知 AED、PCB-AED（假设 AED 位置）和已知 AED 与 PCB-AED 一起进行了 AED 覆盖估计，总体上以及住宅和非住宅区域。从每个 OHCA 到最近 AED 的直线距离进行了计算，并在这些组之间进行了比较。
用 PCB-AED 增强的已知 AED 覆盖了更多的城市（55%比 30%），以及更大比例的住宅（62%比 27%）和非住宅区域（45%比 30%）。当已知 AED 与 PCB-AED 一起增强时，从 OHCA 到 AED 的中位数距离明显缩短（0.12mi 比 0.32mi；p=0.001）。
用部署在 PCB 上的 AED 增强现有的公共可访问 AED 可以提高住宅和非住宅区域的 AED 空间覆盖范围，并减少从 AED 到 OHCA 的距离。
