Patient selection criteria for liver transplantation

Area of Science:

• Hepatology
• Transplantation Medicine
• Public Health Policy

Background:

• Increasing demand for liver transplantation contrasts with a limited cadaveric organ supply.
• A growing number of patients die while awaiting organs or are disqualified due to deteriorating health.
• This organ shortage necessitates ongoing reevaluation of transplant eligibility and organ distribution strategies.

Purpose of the Study:

• To analyze the evolution of liver transplant selection and allocation policies in response to organ scarcity.
• To examine the ethical considerations and practical challenges in balancing patient urgency and transplant outcomes.
• To review strategies for expanding the donor organ pool.

Main Methods:

• Review of historical and current liver transplant listing criteria and allocation policies in the United States.
• Analysis of the impact of the Model for End-Stage Liver Disease (MELD) score on patient prioritization.
• Examination of proposed and implemented strategies to increase organ availability.

Main Results:

• Past listing criteria aimed to prevent allocation based solely on waiting time, prioritizing sicker patients.
• The MELD system, while assessing disease severity, has been noted to favor candidates with poorer post-transplant survival.
• Strategies like using marginal donors, split liver transplants, and living donors are being explored to increase organ supply.

Conclusions:

• Continuous policy revisions are essential to address the liver organ shortage and its impact on patient survival.
• Balancing medical justice (sickest first) and utility (best outcome) remains a core challenge in organ allocation.
• Expanding the donor pool through innovative approaches is critical for meeting the growing demand for liver transplantation.