• Fernando Rosell Ortiz, Patricia Fernández Del Valle, Emily C Knox, Xavier Jiménez Fábrega, Navalpotro PascualJosé MJMSUMMA112, Madrid, Spain., Inmaculada Mateo Rodríguez, José I Ruiz Azpiazu, José A Iglesias Vázquez, Echarri SucunzaAlfredoAServicios de Urgencias Extrahospitalarias de Navarra, Spain., Daniel F Alonso Moreno, Ana B Forner Canos, María J García-Ochoa Blanco, Nuria López Cabeza, Belén Mainar Gómez, Susana Batres Gómez, José A Cortés Ramas, María I Ceniceros Rozalén, Francisco A Guirao Salas, Fernández MartínezBegoñaBServicio de Emergencia 061, Cantabria, Spain., Antonio Daponte Codina, and OHSCAR investigators.
• Servicio de Urgencias Médicas 061, La Rioja, Spain. Electronic address: fernandorosell@gmail.com.
• Resuscitation. 2020 Dec 1; 157: 230240230-240.

AimsThe influence of the COVID-19 pandemic on attendance to out-of-hospital cardiac arrest (OHCA) has only been described in city or regional settings. The impact of COVID-19 across an entire country with a high infection rate is yet to be explored.MethodsThe study uses data from 8629 cases recorded in two time-series (2017/2018 and 2020) of the Spanish national registry. Data from a non-COVID-19 period and the COVID-19 period (February 1st-April 30th 2020) were compared. During the COVID-19 period, data a further analysis comparing non-pandemic and pandemic weeks (defined according to the WHO declaration on March 11th, 2020) was conducted. The chi-squared analysis examined differences in OHCA attendance and other patient and resuscitation characteristics. Multivariate logistic regression examined survival likelihood to hospital admission and discharge. The multilevel analysis examined the differential effects of regional COVID-19 incidence on these same outcomes.ResultsDuring the COVID-19 period, the incidence of resuscitation attempts declined and survival to hospital admission (OR = 1.72; 95%CI = 1.46-2.04; p < 0.001) and discharge (OR = 1.38; 95%CI = 1.07-1.78; p = 0.013) fell compared to the non-COVID period. This pattern was also observed when comparing non-pandemic weeks and pandemic weeks. COVID-19 incidence impinged significantly upon outcomes regardless of regional variation, with low, medium, and high incidence regions equally affected.ConclusionsThe pandemic, irrespective of its incidence, seems to have particularly impeded the pre-hospital phase of OHCA care. Present findings call for the need to adapt out-of-hospital care for periods of serious infection risk.Study Registration NumberISRCTN10437835.Copyright © 2020 Elsevier B.V. All rights reserved.

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