Outcomes Among Patients Hospitalized With COVID-19 and Acute Kidney Injury

Northwell Nephrology COVID-19 Research Consortium

Research output: Contribution to journalArticlepeer-review

168 Scopus citations

Abstract

Rationale & Objective: Outcomes of patients hospitalized with coronavirus disease 2019 (COVID-19) and acute kidney injury (AKI) are not well understood. The goal of this study was to investigate the survival and kidney outcomes of these patients. Study Design: Retrospective cohort study. Setting & Participants: Patients (aged ≥18 years) hospitalized with COVID-19 at 13 hospitals in metropolitan New York between March 1, 2020, and April 27, 2020, followed up until hospital discharge. Exposure: AKI. Outcomes: Primary outcome: in-hospital death. Secondary outcomes: requiring dialysis at discharge, recovery of kidney function. Analytical Approach: Univariable and multivariable time-to-event analysis and logistic regression. Results: Among 9,657 patients admitted with COVID-19, the AKI incidence rate was 38.4/1,000 patient-days. Incidence rates of in-hospital death among patients without AKI, with AKI not requiring dialysis (AKI stages 1-3), and with AKI receiving dialysis (AKI 3D) were 10.8, 31.1, and 37.5/1,000 patient-days, respectively. Taking those without AKI as the reference group, we observed greater risks for in-hospital death for patients with AKI 1-3 and AKI 3D (HRs of 5.6 [95% CI, 5.0-6.3] and 11.3 [95% CI, 9.6-13.1], respectively). After adjusting for demographics, comorbid conditions, and illness severity, the risk for death remained higher among those with AKI 1-3 (adjusted HR, 3.4 [95% CI, 3.0-3.9]) and AKI 3D (adjusted HR, 6.4 [95% CI, 5.5-7.6]) compared with those without AKI. Among patients with AKI 1-3 who survived, 74.1% achieved kidney recovery by the time of discharge. Among those with AKI 3D who survived, 30.6% remained on dialysis at discharge, and prehospitalization chronic kidney disease was the only independent risk factor associated with needing dialysis at discharge (adjusted OR, 9.3 [95% CI, 2.3-37.8]). Limitations: Observational retrospective study, limited to the NY metropolitan area during the peak of the COVID-19 pandemic. Conclusions: AKI in hospitalized patients with COVID-19 was associated with significant risk for death.

Original languageEnglish (US)
Pages (from-to)204-215.e1
JournalAmerican Journal of Kidney Diseases
Volume77
Issue number2
DOIs
StatePublished - Feb 2021
Externally publishedYes

Keywords

  • AKI-on-CKD
  • COVID-19 outcomes
  • Coronavirus disease 2019 (COVID-19)
  • acute kidney injury (AKI)
  • acute renal failure (ARF)
  • death
  • dialysis
  • hospitalization
  • in-hospital mortality
  • kidney replacement therapy (KRT)
  • recovery
  • renal prognosis
  • renal recovery
  • severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)

ASJC Scopus subject areas

  • Nephrology

Fingerprint

Dive into the research topics of 'Outcomes Among Patients Hospitalized With COVID-19 and Acute Kidney Injury'. Together they form a unique fingerprint.

Cite this