• Andreia Filipa Sá, Sofia Fonseca Lourenço, Rafael da Silva Teixeira, Filinto Barros, António Costa, and Paulo Lemos.
• Centro Hospitalar Universitário do Porto, Serviço de Anestesiologia, Porto, Portugal.
• Braz J Anesthesiol. 2021 Mar 1; 71 (2): 123-128.

BackgroundSARS-CoV-2 virus changed society's behaviour. Population was advised to reduce unnecessary heath care use to accommodate urgent cases and daily increase of COVID-19 patients. Health care facilities faced huge challenges, having to readjust their response to preserve good quality of care. In Portugal, a significant reduction in the number of admissions to the Emergency Department (ED) was reported all over the country, however the impact on the dynamics of undeferrable surgery remains to be reported. This study compares the volume and characteristics of urgent/emergency surgery during the 2020 COVID-19 pandemic with the homologous period in 2019, chronologically illustrating the national evolution of new COVID-19 cases and the social and hospital containment response.MethodsA retrospective observational study was conducted in a tertiary hospital center located in the most affected region by COVID-19 in Portugal. Medical records of patients who underwent urgent/emergency surgery between March 1st and May 2nd of both 2020 and 2019 were examined and the volume of surgeries were compared. Also, daily national updates from Portuguese Directorate-General for Health were analysed.ResultsDuring the COVID-19 pandemic approximately 30% less patients underwent urgent/emergency surgery (99%CI = 0.18-0.61, p < 0.001). Waiting time for surgery showed no difference between both years (p = 0.068), but patients who did surgery during the 2020 pandemic had higher mortality rates than the ones who did it in 2019 (11.4% in 2020 and 5.9% in 2019, p = 0.001). Reduction in surgery volume was correlated with the increasing number of infected cases nationally.ConclusionThis study demonstrates decreasing numbers of urgent/emergency procedures during the COVID-19 pandemic that may be justified by the national growth number of infected cases. Preoperative mass screening strategy was implemented without compromising the efficiency of surgical service, but patients' mortality was higher. The importance of visiting the ED during COVID-19 pandemic for serious cases that cannot be managed in other settings should be highlighted.© 2021 Sociedade Brasileira de Anestesiologia. Published by Elsevier Editora Ltda.

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