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MELD/PELD: one year later
1Department of Surgery, Division of Transplantation, New England Medical Center/Tufts University School of Medicine, Boston, Massachusetts 02111, USA. rfreeman@tufts-nemc.org
Transplantation Proceedings
|November 13, 2003
Summary
The US liver allocation policy shifted to a continuous scale, prioritizing patient-specific needs over waiting time. This change resulted in fewer waiting list removals and more transplants, particularly for liver cancer patients, without impacting survival rates.
Area of Science:
- Transplantation Medicine
- Public Health Policy
- Organ Allocation Systems
Background:
- The previous US liver allocation system relied on a categorical approach with significant weight on waiting time.
- Dissatisfaction with the old system stemmed from its poor discrimination of medical urgency and lengthy waiting periods.
- A new policy was implemented to create a more objective and patient-specific system for ranking liver transplant candidates.
Purpose of the Study:
- To evaluate the impact of the revised US liver allocation policy implemented in February 2002.
- To compare liver allocation outcomes before and after the policy change.
- To assess changes in waiting list dynamics, transplant numbers, and patient survival.
Main Methods:
- Comparative analysis of liver allocation data from two 6-month periods: pre-policy change (Feb-Aug 2001) and post-policy change (Feb-Aug 2002).
- Examination of waiting list registrations, removals (due to death or "too sick"), and the number of cadaveric liver transplants.
- Specific analysis of outcomes for patients with hepatocellular cancer.
Main Results:
- Fewer patients were registered on the waiting list under the new policy.
- There was a decrease in waiting list removals due to death or being "too sick."
- An increase in the number of cadaveric liver transplants was observed, with a significant rise in transplants for patients with hepatocellular cancer.
Conclusions:
- The new US liver allocation policy provides a more objective, patient-specific system for ranking candidates.
- The policy has successfully increased the number of liver transplants, especially for patients with specific conditions like cancer.
- While improvements are ongoing, the new system represents a positive step in liver allocation, with early post-transplant survival remaining stable.