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Original Research

Open Access

Impact of COVID-19 pandemic on bystander CPR in patient with OHCA: a registry-based before and after study in Daegu, Korea

  • Haewon Jung1
  • Jung Ho Kim2,*,
  • Hyun Wook Ryoo1
  • Jong-Yeon Kim3
  • Jae Yun Ahn1
  • Sungbae Moon1
  • Won Kee Lee4
  • Sang-Hun Lee5

1Department of Emergency Medicine, School of Medicine, Kyungpook National University, 41944 Daegu, Republic of Korea

2Department of Emergency Medicine, Yeungnam University College of Medicine, 42415 Daegu, Republic of Korea

3Department of Public Health, Kyungpook National University Hospital, 41944 Daegu, Republic of Korea

4Department of Medical Informatics, Kyungpook National University School of Medicine, 41944 Daegu, Republic of Korea

5Department of Emergency Medicine, Keimyung University Dongsan Hospital, Keimyung University School of Medicine, 42601 Daegu, Republic of Korea

DOI: 10.22514/sv.2023.116 Vol.20,Issue 1,January 2024 pp.94-105

Submitted: 13 May 2023 Accepted: 10 August 2023

Published: 08 January 2024

*Corresponding Author(s): Jung Ho Kim E-mail:


Bystander cardiopulmonary resuscitation (BCPR) is a significant factor in the chain of survival; however, various potential barriers are observed. We aimed to identify the impact of the coronavirus disease 2019 (COVID-19) pandemic on BCPR. This retrospective observational study used Daegu out-of-hospital cardiac arrest (OHCA) registry data of patients aged over 18 years with cardiac etiology in Daegu, Korea from 18 February 2019 to 17 February 2021. We divided BCPR into self-led (SBCPR) and dispatcher-assisted BCPR (DACPR). To determine changes in the effect of BCPR on OHCA outcomes from the COVID-19 pandemic, we performed multivariable logistic regression analyses by BCPR type. Furthermore, we performed the Wald test to identify differences in logistic regression analysis results between the two periods. A total of 1680 OHCAs were included (before-pandemic, 804; during pandemic, 876). The BCPR rate was not different between the two periods (DACPR, 43.9% vs. 42.0%; SBCPR, 18.7% vs. 18.4; p = 0.643). SBCPR showed effectiveness for OHCA outcomes before the pandemic (adjusted odds ratio (aOR), 2.59; 95% confidence interval (CI), 1.09–6.18 for survival to hospital discharge; aOR, 2.58; 95% CI, 1.03–6.46 for favorable neurological outcomes); however, it disappeared after the pandemic (aOR, 1.88; 95% CI, 0.88–4.00 for survival to hospital discharge; aOR, 1.67; 95% CI, 0.69–4.05 for favorable neurological outcomes). However, no statistical difference was observed in the Wald test (survival to hospital discharge, p = 0.586; favorable neurologic outcomes, p = 0.504). A decreasing trend in the effect of SBCPR on OHCA outcomes was observed during the COVID-19 pandemic; however, no statistically significant difference was observed compared with that before the pandemic.


Bystander cardiopulmonary resuscitation; COVID-19; Outcomes; Out-of-hospital cardiac arrest; Pandemic

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Haewon Jung,Jung Ho Kim,Hyun Wook Ryoo,Jong-Yeon Kim,Jae Yun Ahn,Sungbae Moon,Won Kee Lee,Sang-Hun Lee. Impact of COVID-19 pandemic on bystander CPR in patient with OHCA: a registry-based before and after study in Daegu, Korea. Signa Vitae. 2024. 20(1);94-105.


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