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. 2023 Jun;36(5):1425-1434.
doi: 10.1007/s40620-023-01613-z. Epub 2023 Apr 15.

Risk factors for development of acute kidney injury and acute kidney disease in critically ill children

Wun Fung Hui  1 , Vivian Pui Ying Chan  2 , Wing Lum Cheung  3 , Shu Wing Ku  3 , Kam Lun Hon  3
Affiliations

Risk factors for development of acute kidney injury and acute kidney disease in critically ill children

Wun Fung Hui et al. J Nephrol. 2023 Jun.

Erratum in

Abstract

Background: Acute kidney injury (AKI) is common among critically ill children and these children are at risk of developing acute kidney disease (AKD).

Methods: A prospective cohort study was conducted on children aged > 1 month to ≤ 18 years old admitted to the pediatric intensive care unit (ICU) of Hong Kong Children's Hospital from 6/2020 to 6/2021. The incidences and risk factors of both AKI and AKD were determined.

Results: There were 254 eligible admissions (58.3% in males, with a median age of 4.9 [9.7] years). The overall AKI incidence was 41.7% and 56% of children who remained hospitalized in the pediatric ICU for ≥ 7 days after acquiring AKI developed AKD. Cardiac surgery, bone marrow transplantation and requirement of inotropes were risk factors for both AKI and AKD. The requirement of non-invasive ventilation [relative risk (RR): 2.625 (1.361, 5.064)], total medication dose [RR 1.006 (1.002, 1.010)] and maximal medication intensity [RR 1.154 (1.038, 1.283)] were additional determinants of AKI. Factors indicating more severe AKI and AKI progression were predictive of AKD development. The overall mortality in the pediatric ICU was 3.1%. AKI was significantly associated with mortality (p < 0.001), longer length of hospitalization in the pediatric ICU (p < 0.001) and hospital stay (p < 0.001). AKD was associated with a lower estimated glomerular filtration rate at discharge from the pediatric ICU (p = 0.036).

Conclusion: AKI and AKD were common among critically ill children, and were associated with significant morbidity and mortality. Few modifiable risk factors, especially those related to nephrotoxic medication exposure, were associated with AKI development and AKD progression.

Keywords: Acute kidney disease; Acute kidney injury; Children; Nephrotoxic medications; Risk factors.

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