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Changes Ahead for Liver-Transplant Priority List

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WebMD Health News
Reviewed by Gary D. Vogin, MD

May 30, 2001 (Atlanta) -- If you are one of the nearly 18,000 Americans waiting for a liver transplant, you already know one hard, cold fact: there aren't enough livers to go around. Last year only 5,000 patients got liver transplants, so your life depends on getting to the top of the list.

Now the rules may be changing.

The lists that determine who gets donated organs is kept by a fiercely independent nonprofit organization called the United Network for Organ Sharing or UNOS. Since the 1950s, UNOS has used the same basic system for getting livers to patients who need them most: the Child-Turcotte-Pugh (CTP) scoring system. Now it looks like they are getting ready for something new.

It's called the Model for End Stage Liver Disease or MELD. The old CTP system depended on a doctor's opinion of how bad some of a patient's symptoms had become. The MELD system doesn't ask anybody's opinion -- it is based on laboratory tests and a patient's precise diagnosis. Most studies -- but not all of them -- show that MELD works at least as well as the old system in predicting which waiting-list patients will die if they don't get the next available liver.

"Because the MELD system is felt to do a better job of stratifying patients, it gives them some assurance that if they are sick and need a new liver they are more likely to be placed at the top of the list," C. Wright Pinson, MD, MBA, tells WebMD. "The MELD system seems to do a better job of identifying the patient who is at highest risk of early death. It gives patients a better chance of appearing at the top of the list when they need to."

"We wanted a way of allocating organs to patients with roughly equal severity of illness and likelihood of transplant success," says Todd K. Howard, MD, chair of the UNOS liver allocation committee. "MELD is the first step in predicting who is the sickest patient."

Pinson, chief of liver transplantation and chief of staff at Vanderbilt University Hospital in Nashville, recently co-chaired a lively roundtable debate on the proposed new MELD standard here at the Digestive Disease Week conference.

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