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Published on: February 10, 2026
Prognosis for children with acute kidney injury in the intensive care unit
Nilzete Bresolin1, Carlos Silva, Ana Halllal
1Hospital Infantil Joana de Gusmão, Florianópolis, Santa Catarina, Brazil. nilzete.bresolin@hotmail.com
Insights
This study identified key factors predicting mortality in critically ill children with acute kidney injury (AKI). Anuria, hypotension, need for mechanical ventilation, and multiple organ failure (MOF) were significant indicators of poor prognosis.
Area of Science:
- Pediatric Nephrology
- Critical Care Medicine
- Intensive Care Unit (ICU) Research
Background:
- Acute kidney injury (AKI) is a significant concern in critically ill children.
- Understanding prognostic factors is crucial for improving outcomes in pediatric AKI.
Purpose of the Study:
- To identify factors of prognostic importance for critically ill infants and children diagnosed with acute kidney injury (AKI).
Main Methods:
- Analysis of 110 critically ill children (1-180 months) admitted to the ICU.
- Utilized Fisher's exact test and Student's t-test for variable analysis.
- Employed Mantel-Haenszel technique for stratified analysis of prognostic variables.
Main Results:
- 33.6% of patients died, primarily from secondary renal insufficiency.
- Significant mortality predictors included anuria, oliguria, arterial hypotension, need for pressor drugs, mechanical ventilation, dialysis, multiple organ failure (MOF), and elevated lactic acid levels.
- Secondary renal disease was the predominant diagnosis (92.8%).
Conclusions:
- Anuria, hypotension, need for mechanical ventilation or dialysis, MOF, and high lactic acid are critical indicators for mortality in pediatric AKI.
- Early recognition and management of these factors are essential for improving survival rates in critically ill children with AKI.
Abstract:
To define factors of prognostic importance for critically ill infants and children with acute kidney injury (AKI), we have studied 110 children, ages from 1 month to 180 months, admitted between March 1, 2002 and September 30, 2004 to the intensive care unit of Joana de Gusmão Children's Hospital. These patients represent 8% of all intensive care unit admissions during the entire study period. The diagnosis at admission was primary renal parenchyma disease (eight patients, 7.2%) and secondary renal disease (102 patients, 92.8%). Thirty-seven patients (33.6%) died, all of whom had secondary renal insufficiency; six patients (5.4%) died as a result of septic shock, and 31 (28.2%) patients died from multiple organ failure (MOF). The variables were analyzed using Fisher's exact test for qualitative variables and Student's t-test for quantitative variables. Stratified analysis was performed to assess the relative importance of variables using the Mantel-Haenszel technique. Among the variables analyzed, the following were found to be significantly related to mortality: anuria, oliguria, arterial hypotension, need for pressor drugs, need for mechanical ventilation, need for dialysis, the association with MOF, and high values of lactic acid.
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