Late-Onset Hepatic Failure in Children: Risk Factors that Determine the Outcome

Background: Late-onset hepatic failure (LOHF) is a distinct entity of intractable liver diseases with limited pediatric experience. We aimed to identify the etiology and risk factors that determine the poor outcome (PO) of pediatric LOHF. Methods: LOHF was defined as liver failure occurring 5–24 weeks after onset of jaundice and without any evidence of underlying chronic liver disease. PO (death or liver transplantation within 160 days) was compared with spontaneous recovery (SR; complete normalization of liver functions in the native liver). Pediatric end-stage liver disease (PELD) score and King’s College Criteria (KCC) were applied to investigate their prognostic value. Results: We enrolled 47 children (6 [2–16] years) with LOHF. Hepatitis A was the most common etiology (15, 32%) and 64% complicated with infections. Twelve children (25%) had SR over 6 (1–24) months, while 28 (60%) children had PO. Univariate analysis showed indeterminate etiology, hepatic encephalopathy (HE), infection, acute kidney injury, and high PELD score determined PO. On multivariate regression analysis, only PELD score with a cutoff 32 (area under curve 0.833, sensitivity 68%, specificity 92%) predicted PO. KCC showed a sensitivity of 85.7%, specificity of 41.7% to determine PO in our cohort. Conclusion: Indeterminate etiology, presence of HE, occurrence of infection at any site, and acute kidney injury lead to the PO. PELD score ≥32 can be utilized to optimize the listing for liver transplantation. A significant proportion survives with the native liver.