• Aditya C Shekhar, Manu Madhok, Teri Campbell, Ira J Blumen, Richard M Lyon, and N Clay Mann.
• The Icahn School of Medicine at Mount Sinai, New York City, NY, United States of America; Harvard Medical School, Boston, MA, United States of America. Electronic address: shekhar.aditya.c@gmail.com.
• Am J Emerg Med. 2023 Mar 1; 65: 848684-86.

IntroductionOut-of-hospital cardiac arrests contribute to significant morbidity and mortality in both non-military/civilian and military populations. Early CPR and AED use have been linked with improved outcomes. There is public health interest in identifying communities with high rates of both with the hopes of creating generalizable tactics for improving cardiac arrest survival.MethodsWe examined a national registry of EMS activations in the United States (NEMSIS). Inclusion criteria were witnessed cardiac arrests from January 2020 to September 2022 where EMS providers documented the location of the arrest, whether CPR was provided prior to their arrival (yes/no), and whether an AED was applied prior to their arrival (yes/no). Cardiac arrests were then classified as occurring on a military base or in a non-military setting.ResultsA total of 60 witnessed cardiac arrests on military bases and 202,605 witnessed cardiac arrests in non-military settings met inclusion criteria. Importantly, the prevalence of CPR and AED use prior to EMS arrival was significantly higher on military bases compared to non-military settings.ConclusionsReasons for the trends we observed may be a greater availability of CPR-trained individuals and AEDs on military bases, as well as a widespread willingness to provide aid to victims of cardiac arrest. Further research should examine cardiac arrests on military bases.Copyright © 2022 Elsevier Inc. All rights reserved.

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