• Pediatr Crit Care Me · Jul 2021

    Association Between Acute Kidney Injury Duration and Outcomes in Critically Ill Children.

    • Rashid Alobaidi, Natalie Anton, Shauna Burkholder, Daniel Garros, Garcia GuerraGonzaloGDepartment of Pediatrics, Division of Pediatric Critical Care Medicine, University of Alberta and Stollery Children's Hospital, Edmonton, AB, Canada., Emma H Ulrich, and Sean M Bagshaw.
    • Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Alberta and Stollery Children's Hospital, Edmonton, AB, Canada.
    • Pediatr Crit Care Me. 2021 Jul 1; 22 (7): 642650642-650.

    ObjectivesAcute kidney injury occurs frequently in children during critical illness and is associated with increased morbidity, mortality, and health resource utilization. We aimed to examine the association between acute kidney injury duration and these outcomes.DesignRetrospective cohort study.SettingsPICUs in Alberta, Canada.PatientsAll children admitted to PICUs in Alberta, Canada between January 1, 2015, and December 31, 2015.InterventionsNone.Measurements And Main ResultsIn total, 1,017 children were included, and 308 (30.3%) developed acute kidney injury during PICU stay. Acute kidney injury was categorized based on duration to transient (48 hr or less) or persistent (more than 48 hr). Transient acute kidney injury occurred in 240 children (77.9%), whereas 68 children (22.1%) had persistent acute kidney injury. Persistent acute kidney injury had a higher proportion of stage 2 and stage 3 acute kidney injury compared with transient acute kidney injury and was more likely to start within 24 hours from PICU admission. Persistent acute kidney injury occurred more frequently in those with higher illness severity and in those admitted with shock, sepsis, or with a history of transplant. Mortality varied significantly according to acute kidney injury status: 1.8% of children with no acute kidney injury, 5.4% with transient acute kidney injury, and 17.6% with persistent acute kidney injury died during hospital stay (p < 0.001). On multivariable analysis adjusting for illness and acute kidney injury severity, transient and persistent acute kidney injury were both associated with fewer ventilation-free days at 28 days (-1.28 d; 95% CI, -2.29 to -0.26 and -4.85 d; 95% CI, -6.82 to -2.88), vasoactive support-free days (-1.07 d; 95% CI, -2.00 to -0.15 and -4.24 d; 95% CI, -6.03 to -2.45), and hospital-free days (-1.93 d; 95% CI, -3.36 to -0.49 and -5.25 d; 95% CI, -8.03 to -2.47), respectively.ConclusionsIn critically ill children, persistent and transient acute kidney injury have different clinical characteristics and association with outcomes. Acute kidney injury, even when its duration is short, carries significant association with worse outcomes. This risk increases further if acute kidney injury persists longer independent of the degree of its severity.Copyright © 2021 by the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies.

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