Reducing transfusion requirements in liver transplantation

Area of Science:

• Hepatology
• Transplantation Surgery
• Anesthesiology

Background:

• Liver transplantation historically involved substantial blood loss and transfusions.
• Both bleeding and transfusions negatively impact liver transplant outcomes.
• Reducing perioperative bleeding and transfusions are critical goals.

Purpose of the Study:

• To review the evolution of bleeding and transfusion management in liver transplantation.
• To summarize the causes and predictors of bleeding in liver transplant recipients.
• To present evidence supporting patient blood management (PBM) strategies in liver transplantation.

Main Methods:

• Review of surgical techniques (e.g., "piggyback" method).
• Discussion of anesthetic strategies (e.g., low central venous pressure, hemodilution).
• Evaluation of blood conservation techniques (e.g., cell salvage, point-of-care monitoring, factor concentrates).
• Assessment of pre-emptive anemia management and restrictive transfusion thresholds.

Main Results:

• Significant reduction in transfusion requirements over two decades.
• Transfusion-free liver transplantation is increasingly achievable.
• Various PBM strategies have contributed to reduced reliance on allogeneic blood products.

Conclusions:

• Patient blood management (PBM) has transformed liver transplantation, reducing bleeding and transfusion needs.
• Despite advancements, challenges remain with marginal grafts and complex recipients.
• Further research and standardized guidelines are needed for optimal transfusion management in liver transplantation.