• Mohammed Shalaby, Norah Khathlan, Osama Safder, Fatina Fadel, Youssef M K Farag, Ajay K Singh, and Jameela A Kari.
• Pediatric Nephrology Unit, Intensive Care Unit, Department of Pediatrics, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia, Pediatric Nephrology Unit, Faculty of medicine, Cairo University, Cairo, Egypt, and Renal Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
• Clin Nephrol. 2014 Dec 1; 82 (6): 379-86.

BackgroundAcute kidney injury (AKI) is common in the pediatric intensive care unit (PICU). We aimed to describe the etiology, clinical features, and outcome of AKI in pediatric patients and to determine the predictors for initiation of renal replacement and mortality.MethodsA retrospective chart review was performed of the medical records for all patients who were admitted to the PICU at King Abdulaziz University Hospital between January 1 and December 31, 2011. The pediatric-modified RIFLE criteria were used to classify AKI.ResultsWe included 102 children with AKI, aged 4 - 60 months. Oliguria (61.5%, p < 0.0001) and hypervolemic signs (38.5%, p = 0.03) were more common among patients with RIFLE class failure. They also had the highest mortality (53.9%, p = 0.01). Oliguric patients were ~ 23 times more likely than their non-oliguric counterparts to be initiated on renal replacement therapy (RRT) (RR = 23.38, 95% CI: 3.07 - 178.16). Diuretic infusion was also a strong predictor for RRT initiation (RR = 10.00, 95% CI: 2.77 - 36.12). Hypervolemic patients were twice more likely to die during hospitalization in both unadjusted and adjusted models (RR = 2.06, 95% CI: 1.09 - 3.90, and aRR = 2.45, 95% CI: 1.09 - 5.51, respectively). Mechanical ventilation and RRT initiation were associated with higher likelihood of death (ARR = 13.23, 95% CI: 1.90 - 92.04, and ARR = 2.20, 95% CI: 1.18 - 4.12, respectively). Patients with RIFLE class Failure were about thrice more likely than patients with RIFLE class Risk to die in both the unadjusted (RR = 2.76, 95% CI: 1.35 - 5.65), and adjusted models (ARR = 2.88, 95% CI: 1.38 - 6.04). Children with AKI had longer PICU stay (0.0003) and higher mortality (< 0.0001) than the non-AKI group.ConclusionSevere AKI predicted high mortality in critically ill children.

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