Therapeutic Plasma Exchange in Hepatology: Indications, Techniques, and Practical Application

Area of Science:

• Hepatology
• Critical Care Medicine
• Immunology

Background:

• Liver failure poses a significant mortality risk, with liver transplantation (LT) being the primary treatment.
• Non-transplant treatment options are crucial for reducing morbidity and mortality in liver failure patients.
• Artificial liver support systems (ALSS) offer potential alternatives, but their efficacy varies.

Purpose of the Study:

• To highlight therapeutic plasma exchange (TPE) as a key non-transplant treatment for liver failure.
• To provide hepatologists with a comprehensive understanding of TPE's clinical, technical, and practical applications.
• To address knowledge gaps and outline future directions for TPE in liver failure management.

Main Methods:

• TPE involves removing the patient's entire plasma and replacing it with healthy donor fresh frozen plasma.
• This process removes damage-associated-molecular patterns and other harmful substances.
• Unlike dialysis-based ALSS, TPE directly replaces plasma components.

Main Results:

• TPE is the only ALSS demonstrated to improve survival in acute liver failure (ALF) patients.
• Data suggests survival benefits and successful bridging to transplant in various disorders.
• TPE offers metabolic detoxification, synthetic functions, and innate immunity modulation.

Conclusions:

• TPE is a readily available and effective ALSS with significant potential to improve liver failure patient outcomes.
• Hepatologists should leverage TPE, understanding its indications, rationale, and techniques.
• Further understanding and application of TPE can enhance patient survival and bridge to transplantation.