ACLF is present in 11.2% of childhood CLD, with a 90-day native liver survival of 61%. A Chronic Liver Failure-Sequential Organ Failure Assessment score of ≥10 best predicts mortality at day 90.

Caroli syndrome is more likely to present in the neonatal period and these patients are more likely to develop CKD5d. CKD stage 3 or above with recurrent cholangitis is more common in Caroli syndrome presenting beyond the neonatal period and adds to the significant morbidity in these patients. Children presenting in the neonatal period have a more severe phenotype and should be considered early for combined liver-kidney transplant.

Acute kidney injury developed in 22.6% of children with acute-on-chronic liver failure. Bilirubin more than 17.7 mg/dL and presence of systemic inflammatory response syndrome were high risk factors for acute kidney injury. Development of acute kidney injury in a child with acute-on-chronic liver failure suggests poor outcome and need for early intervention.

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