Analyzing Severe Acute Kidney Injury Using the Renal Angina Index

Area of Science:

• Pediatric Critical Care Medicine
• Nephrology
• Clinical Prediction Tools

Background:

• Acute kidney injury (AKI) is a frequent complication in critically ill children within the pediatric intensive care unit (PICU).
• The Renal Angina Index (RAI) is a validated tool for assessing AKI risk upon PICU admission.
• RAI integrates objective kidney dysfunction markers and patient risk factors to predict severe AKI.

Purpose of the Study:

• To evaluate the efficacy of the Renal Angina Index (RAI) for the early prediction of severe AKI in pediatric patients.
• To assess the correlation between RAI positivity and the incidence of AKI in a pediatric intensive care setting.

Main Methods:

• A prospective observational study was conducted in a pediatric intensive care unit (PICU) from 2020 to 2022.
• Included were children aged 1 month to 14 years.
• Renal Angina Index (RAI) scoring was performed on admission (day 0), and AKI development was monitored on day 3.

Main Results:

• RAI positivity was observed in 44.9% of patients, with 37.7% developing AKI.
• RAI-positive patients showed significantly higher rates of mechanical ventilation (71% vs. 9.6%), longer PICU stays (10.38 vs. 6.95 days), and increased mortality (20.4% vs. 7%).
• A higher proportion of RAI-positive patients progressed to stages 1, 2, and 3 AKI compared to RAI-negative patients.

Conclusions:

• The Renal Angina Index (RAI) serves as a reliable tool for predicting AKI in critically ill children.
• Early identification of high-risk patients using RAI can potentially guide timely interventions.