COVID-19 lock-down significantly reduced number of surgical presentations in an emergency department.

BACKGROUND: Coronavirus disease 2019 (COVID-19) is an acute virus infection, which was declared by the World Health Organization (WHO) as a pandemic. As a consequence, the Swiss government decreed a public lock-down to reduce and restrict further infections. The aim of this investigation was to provide the impact of the COVID-19 lock-down on the presentations of patients in an interdisciplinary emergency department (ED). PATIENTS, MATERIAL AND METHODS: A retrospective study was performed at an interdisciplinary Swiss ED during the lock-down period. All patients who presented to the ED were enrolled in this investigation and compared to a control cohort during the same time period in 2019. Data regarding patients' characteristics, medical specialty, time course of presentations during the observation period, outpatient or hospital admission were analyzed. RESULTS: In total 7072 patients were included in the final analysis. During the lock-down period the number of ED presentations significantly decreased by 29% in comparison to the control period in the previous year (p < 0.0001). The analysis of the time course revealed that in each week the number of patients was lower with 13-43% reduction. Irrespective of the medical specialty, the number of presentations decreased during the COVID-19 situation, whereas this decrease was higher in surgical diseases (31%, p < 0.0001) than in non-surgical presentations (3.6%, p = 0.4). CONCLUSION: The socioeconomic lock-down was associated with reduced number of presentations in an ED. Mainly, surgical diseases and injuries were affected in terms of a reduction of presentations during the COVID-19 lock-down period.