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Supplementary Material for: Incidence and Outcomes of Acute Kidney Injury in COVID-19: A Systematic Review

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posted on 15.06.2021, 10:01 by Raina R., Mahajan Z.A., Vasistha P., Chakraborty R., Mukunda K., Tibrewal A., Neyra J.A.
Background and Objectives: The recent worldwide pandemic of COVID-19 has been a serious, multidimensional problem that has left a detrimental worldwide impact on individuals of all ages and several organ systems. The typical manifestation of kidney involvement is acute kidney injury (AKI); however, there is a lack of consensus data regarding AKI epidemiology in COVID-19. This systematic literature review aims to bridge this knowledge gap. Design, Setting, Participants, and Measurements: MEDLINE and Cochrane library were systematically searched for the literature related to AKI in COVID-19 patients of all ages. MedRxIV was searched for relevant unpublished manuscripts. Two reviewers independently assessed the literature on the incidence of AKI and mortality, extracting the need for kidney replacement therapy (KRT). Results: Sixty studies (n = 43,871 patients) were included in this review. The pooled incidence of AKI among COVID-19 patients was 19.45% (95% confidence intervals [95% CI]: 14.63–24.77%), while the pooled incidence of AKI COVID-19 patients requiring KRT was 39.04% (16.38–64.57%). The pooled proportion of COVID+ patients was significantly lower at 8.83% (5.64% to 12/66%). The overall mortality of COVID-19 patients was calculated to be 17.71% (95% CI: 11.49–24.93%), while the mortality among patients with AKI was higher at 54.24% (95% CI: 44.70–63.63%). Conclusion: This comprehensive systematic review summarizes the available literature pertaining to AKI epidemiology in COVID-19 patients and highlights the incidence, associated mortality, and the need for KRT in this susceptible population.

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