Update on prognosis driven classification of pediatric AKI

Area of Science:

• Pediatric Nephrology
• Renal Medicine
• Biomarker Discovery

Background:

• Acute kidney injury (AKI) is common in hospitalized children, increasing morbidity and mortality.
• AKI can progress to acute kidney disease (AKD) and chronic kidney disease (CKD), challenging initial assumptions of a good prognosis.
• Current AKI staging relies on creatinine, eGFR, and urine output, which detect injury late and may mask persistent dysfunction due to renal compensation.

Purpose of the Study:

• To review current definitions and epidemiology of AKI, AKD, and CKD in children.
• To explore risk factors associated with AKI progression to AKD and CKD.
• To identify novel biomarkers for early AKI detection and risk stratification for progression.

Main Methods:

• Literature review of definitions, epidemiology, and risk factors for AKI progression.
• Analysis of current biomarkers and their limitations in early AKI detection.
• Exploration of potential novel biomarkers and risk stratification strategies.

Main Results:

• Existing biomarkers for AKI are often detected late in the disease process.
• Kidney compensation mechanisms can normalize creatinine levels despite ongoing nephron loss, masking persistent injury.
• Identifying modifiable and non-modifiable risk factors is essential for predicting progression.

Conclusions:

• Accurate classification of children at risk for AKD and CKD progression is needed.
• Developing novel early biomarkers is critical for timely intervention.
• Preventing initial injury and mitigating further damage during recovery are key to reducing long-term kidney disease risk.