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Abstract

Aim: Patients hospitalized with COVID-19 have a higher incidence of Acute Kidney Injury (AKI) compared with non-COVID patients. Previous observational studies showed AKI in hospitalized patients with COVID-19 was associated with significant increased mortality rate. We conducted a retrospective cohort study in a large mid- Atlantic health system to investigate whether COVID-19 associated AKI during hospitalization would lead to worse outcomes in a predominant Black patient population, compared to COVID-19 without AKI. Methods: We reviewed health records of patients (aged≥18 years) admitted with symptomatic COVID-19 between March 5, 2020, and Jun 3, 2020, in 9 acute care facilities within MedStar Health. Patients were followed up until 3 months after discharge. Primary outcome was inpatient mortality. Secondary outcomes were need for ICU level of care, need for intubation, length of ICU stay, length of hospital stay, need for renal replacement therapy, recovery of renal function. Results: Among 1107 patients admitted with symptomatic COVID-19, the AKI incidence rate was 35%. African American patients made up 63% of the total patient population and 74% of the total AKI population. Inpatient mortality in AKI group and non-AKI group was 163(41.9%) and 71(9.9%), respectively. COVID-19 patients with AKI had significant higher risk of in-patient mortality (OR, 4.71 [95% CI, 3.38-6.62], P

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