COVID-19 and surgery. Impact on volumes of care, postoperative complications and mortality. Results after one year of the pandemic

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Jorge A. Latif
Mauro J. Lorenzo
Ricardo Solla
Gonzalo Segovia
Alejandro Mitidieri
Adelina Coturel
Jorge Rojas Huayta
Gustavo Kohan


Background: The COVID-19 pandemic produced significant changes in the care and treatment of surgical patients.
Objectives: The aims of this study were to compare the volume of services provided during a year of pandemic with an equal period without pandemic, estimate its impact on health care and institutional care, and compare COVID-positive versus COVID-negative patients to determine postoperative complications, mortality and risk factors associated with these events.
Material and methods: We conducted an observational and retrospective study, comparing the volume of services performed between March 19, 2020, and March 18, 2021, with the same period in 2019/2020. We performed a matched cohort study (in a 2:1 ratio) between patients with and without COVID-19 and analyzed the postoperative complications, mortality, and twelve objective variables as associated risk factors.
Results: There was a significant decrease in planned hospitalizations and non-urgent surgeries and endoscopies, while all the other variables showed a non-significant reduction. Of the 979 admissions, 41 corresponded to COVID-positive patients (4.1%). Mortality was 29.2% in COVID-positive patients (12/41) vs. 7.3%% in those COVID negative. The significant risk factors associated with mortality were age ≥75 years, male sex, COVID+, emergencies, pneumonia, requirement of ICU and MV. Patients operated on had a significantly higher rate of pneumonia. Logistic regression analysis between COVID+ patients and COVID- patients showed that COVID+ and need for MV were predictors of mortality. In COVID+ patients, only MV was a determinant of mortality.
Conclusion: The COVID-19 pandemic reduced healthcare services and increased mortality in patients infected with the virus.


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Latif , J. A., Lorenzo, M. J., Solla, R., Segovia, G., Mitidieri, A., Coturel, A., Rojas Huayta, J., & Kohan, G. (2022). COVID-19 and surgery. Impact on volumes of care, postoperative complications and mortality. Results after one year of the pandemic. Revista Argentina De Cirugía, 114(4), 307–3016. Retrieved from
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