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Acute liver failure
1Liver Unit, Birmingham Children's Hospital, NHS Trust, Lady Wood Middleway, Birmingham, B 16 8ET, UK.
Insights
Acute liver failure in children is a serious condition with varying causes and presentations. Early diagnosis and management, including liver transplantation, are crucial for improving survival rates.
Area of Science:
- Pediatric Hepatology
- Critical Care Medicine
- Transplantation Surgery
Background:
- Acute liver failure (ALF) is a rare, life-threatening condition in children.
- Pediatric ALF definitions differ from adult fulminant hepatic failure, especially in autoimmune or metabolic liver diseases.
- Etiology of ALF in children varies by age, including infections, metabolic disorders, viral hepatitis, and drug toxicity.
Purpose of the Study:
- To review the etiology, clinical presentation, and management of acute liver failure in children.
- To highlight the importance of liver transplantation in pediatric ALF.
- To discuss prognostic factors and complications associated with pediatric ALF.
Main Methods:
- Review of existing literature on pediatric acute liver failure.
- Analysis of etiological factors across different pediatric age groups.
- Discussion of clinical manifestations, diagnostic criteria, and management strategies.
- Evaluation of prognostic indicators and outcomes of liver transplantation.
Main Results:
- Clinical presentation includes jaundice, coagulopathy, and encephalopathy (potentially subclinical in neonates).
- Major complications include sepsis, GI bleeding, cerebral edema, and multi-organ failure.
- Prognostic factors for poor survival in children include metabolic liver disease, prolonged prothrombin time, rising bilirubin, falling transaminases, and hepatic coma grade II+.
- Liver transplantation, often using reduced or split grafts, offers improved survival, with approximately 70% five-year survival.
Conclusions:
- Acute liver failure in children requires age-specific management approaches.
- Prompt recognition, supportive care, and timely liver transplantation are vital for improving outcomes.
- Continued research is needed to refine prognostic factors and optimize treatment strategies for pediatric ALF.
Abstract:
Acute liver failure is a rare but potentially fatal disease. Adult definition of fulminant hepatic failure, which includes the development of hepatic necrosis and encephalopathy within 8 weeks of onset of liver disease does not apply to acute liver failure in children particularly if secondary to autoimmune or metabolic liver disease. The etiology of acute liver failure varies with the age of the child. In neonates, infection or an inborn error of metabolism are common, while viral hepatitis and drug induced liver failure are more likely in older children. The clinical presentation of acute liver failure includes jaundice, coagulopathy and encephalopathy. In neonates, encephalopathy may be subclinical. The management of acute liver failure includes assessment of prognosis for liver transplantation; prevention and treatment of complications while awaiting hepatic regeneration or a donor liver and hepatic support. The major complications of acute liver failure are sepsis, gastro-intestinal bleeding, cerebral edema, renal and cardiac failure. Selection for liver transplantation depends on the etiology of the disease, prognostic factors, the presence or absence of multisystem disease and/or reversible brain damage. Prognostic factors for survival are less well established in children than in adults but children with metabolic liver disease, prothrombin time > 50 seconds, rising bilirubin and falling transaminase, grade II or higher grade of hepatic coma indicate poor prognosis. Most children receive a reduced or split liver graft. Living related donations for acute liver failure are also carried out by some centres. Survival post liver transplantation for acute liver failure has improved and most recipients can expect a 70% five year survival.