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MELD and other factors associated with survival after liver transplantation
K V Narayanan Menon1, Scott L Nyberg, William S Harmsen
1The William J. von Liebig Transplant Center, Mayo Clinic and Foundation, Rochester, Minnesota, USA. kozhikode@mayo.edu
Abstract:
Allocation of cadaveric livers for transplantation in the United States is now based on the severity of illness as determined by the model for end-stage liver disease (MELD) score, a function of bilirubin, creatinine and international normalized ratio (INR). The aim of our study was to determine the association of various pre-transplant risk factors, including the MELD score, on patient survival after orthotopic liver transplantation (OLT). The medical records of 499 consecutive patients (233 female, 266 males, mean age 50.9 +/- 10.6 years) undergoing cadaveric OLT at our institution between June 1990 and February 1998 were reviewed. In the 407 patients alive at the latest contact, follow-up was 4.7 years, with a minimum of 20 months (maximum of 9.4 years). Variables considered for analysis included MELD score, age, pre-transplant renal dysfunction requiring dialysis, Child-Pugh classification, underlying liver disease, diabetes mellitus, and heart disease (ischemic/valvular/other). There were 92 deaths during follow-up. In univariate analysis, the MELD score, renal failure requiring hemodialysis pre-OLT, age > 42 years, and underlying etiology of liver disease were significantly associated with death during long-term follow-up. In multivariate models, age, underlying etiology of liver disease and renal failure requiring hemodialysis were independent predictors of death after OLT.
Insights
Pre-transplant factors like age, liver disease type, and dialysis need significantly impact patient survival after liver transplantation (OLT). These factors are crucial for predicting long-term outcomes in OLT recipients.
Area of Science:
- Hepatology
- Transplantation Medicine
- Nephrology
Background:
- Liver allocation in the US now uses the Model for End-Stage Liver Disease (MELD) score.
- MELD score incorporates bilirubin, creatinine, and INR to assess disease severity.
- Understanding pre-transplant risk factors is vital for improving patient survival post-orthotopic liver transplantation (OLT).
Purpose of the Study:
- To investigate the association between pre-transplant risk factors and patient survival after OLT.
- To evaluate the predictive value of the MELD score and other clinical variables on long-term OLT outcomes.
Main Methods:
- Retrospective review of 499 patients undergoing cadaveric OLT between 1990 and 1998.
- Analysis of variables including MELD score, age, pre-transplant dialysis, Child-Pugh classification, liver disease etiology, diabetes, and heart disease.
- Univariate and multivariate analyses to identify independent predictors of mortality.
Main Results:
- 92 deaths occurred during the follow-up period (mean 4.7 years).
- Univariate analysis identified MELD score, pre-OLT dialysis, age > 42, and liver disease etiology as significant predictors of mortality.
- Multivariate analysis confirmed age, liver disease etiology, and pre-OLT renal failure requiring hemodialysis as independent predictors of post-OLT death.
Conclusions:
- Age, underlying liver disease etiology, and pre-transplant renal failure requiring hemodialysis are independent predictors of mortality after OLT.
- These factors are critical for risk stratification and improving long-term outcomes in liver transplant recipients.
- Further research may refine risk assessment models for OLT candidates.
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