Continuous Renal Replacement Therapy in Acute Liver Failure: Rationale, Evidence, and Evolving Practice

Area of Science:

• Critical care medicine
• Hepatology
• Nephrology

Background:

• Acute liver failure (ALF) is a severe condition requiring intensive management.
• Advances in intensive care and liver transplantation have improved ALF outcomes.
• Continuous renal replacement therapy (CRRT) is a key intervention in ALF.

Purpose of the Study:

• To review the mechanistic aspects and clinical evidence of CRRT in ALF.
• To summarize current practice patterns and challenges associated with CRRT in ALF.
• To explore emerging applications and future directions for CRRT in ALF.

Main Methods:

• Review of current literature on CRRT in ALF.
• Examination of mechanistic principles and clinical evidence.
• Discussion of practical aspects including initiation, anticoagulation, and combination therapies.

Main Results:

• CRRT offers benefits beyond renal support in ALF, including managing intracranial pressure, volume status, and hyperammonemia.
• The use of CRRT for non-renal indications in ALF is gaining acceptance.
• Challenges in CRRT for ALF include anticoagulation and determining optimal endpoints.

Conclusions:

• CRRT is an essential tool in ALF management with expanding non-renal applications.
• Further research is needed to optimize CRRT strategies and endpoints in ALF.
• Pragmatic decision-making and understanding CRRT principles are crucial for effective ALF care.