Outcomes of Patients with Infective Endocarditis-associated Acute Kidney Injury: a Retrospective Cohort Study

Overview

Journal Clin Kidney J

Publisher Oxford University Press

Date 2025 Jan 20

PMID 39830307

Authors

SanXi Ai

Xiang Feng

Kai Sun

Gang Chen

XinPei Liu

Qi Miao

Yan Qin

Xuemei Li

Affiliations

Soon will be listed here.

Abstract

Background: The outcomes of patients with infective endocarditis (IE)-associated acute kidney injury (AKI) are poorly understood.

Methods: This retrospective cohort study was conducted in a tertiary hospital in China to analyze the short- and long-term outcomes among patients with IE-associated AKI. The risk factors for 90-day mortality, long-term outcomes and kidney non-recovery were analyzed via multivariable logistic regression, the Cox regression, and the Fine-Gray competing risk model, respectively.

Results: Among 294 patients with IE-associated AKI, 14.3% died within 90 days, and the risk factors for 90-day mortality were similar to those identified in the general IE population. Among the 230 AKI survivors in whom 90-day kidney recovery could be assessed, 17.4% did not recover kidney function at 90 days. Kidney non-recovery at 90 days was associated with an increased risk of the long-term composite outcome of mortality, end-stage renal disease or sustained doubling of serum creatinine [hazard ratio (HR) 3.00, 95% confidence interval (CI) 1.19-7.59]. Five variables were related to kidney non-recovery: low baseline estimated glomerular filtration rate (eGFR) (HR 2.52, 95% CI 1.73-3.65), stage of AKI (HR 3.03, 95% CI 2.07-4.42 for stage 3), shock (HR 5.56, 95% CI 3.02-10.22), glomerulonephritis-related AKI (HR 3.04, 95% CI 1.93-4.77) and drug-related AKI (HR 2.77, 95% CI 1.86-4.13).

Conclusion: Patients with IE-associated AKI had a high 90-day mortality, and a substantial proportion of survivors did not recover kidney function at 90 days. Kidney non-recovery at 90 days was associated with adverse long-term outcomes. Low baseline eGFR, severe AKI, shock, drug-related AKI and glomerulonephritis-related AKI were risk factors for kidney non-recovery.

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