Acute liver failure and liver transplantation

Area of Science:

• Hepatology
• Critical Care Medicine
• Transplantation Surgery

Background:

• Acute liver failure (ALF) is a rapid decline in liver function, characterized by jaundice, coagulopathy, and encephalopathy.
• Etiology of ALF varies geographically, with paracetamol toxicity common in the West and viral hepatitis in Asia. Hepatitis A and yellow phosphorus poisoning are significant causes in India.
• Improved critical care and organ support have enhanced ALF outcomes, with many patients recovering through medical management, especially in hyperacute cases.

Purpose of the Study:

• To review the current understanding and management of acute liver failure (ALF).
• To discuss the role of liver transplantation (LT) in ALF and the challenges in patient selection.
• To highlight advancements in surgical techniques and prognostic models for ALF.

Main Methods:

• Review of existing literature on acute liver failure etiology, classification, and management.
• Analysis of prognostic models, including King's College criteria and ALF-Early Dynamic (ALFED) model.
• Discussion of liver transplantation (LT) outcomes and innovative surgical approaches like Auxiliary Partial Orthotopic Liver Transplantation (APOLT).

Main Results:

• Majority of ALF patients, particularly hyperacute cases, recover with medical management.
• Patients with seronegative hepatitis, non-paracetamol drug toxicity, and sub-acute ALF are more likely to need LT.
• Survival rates for LT in ALF patients are approximately 80% at one year and 70% at five years, showing significant improvement.

Conclusions:

• Effective management of ALF relies on critical care, accurate prognostication, and timely intervention, including LT when necessary.
• Prognostic models like King's College criteria and ALFED aid in identifying patients who may benefit from LT, though challenges in sensitivity and organ availability persist.
• Innovations such as living donor LT and APOLT are crucial, especially in regions with lower organ donation rates, offering life-saving options for ALF patients.