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Updated: Jul 9, 2026
Orthotopic Liver Transplantation in Rats
Published on: July 1, 2012
Liver transplantation for acute liver failure: trying to define when transplantation is futile
L F Pacheco-Moreira1, E Balbi, M Enne
1Liver Transplantation Unit, Bonsucesso General Hospital, Rio de Janeiro, Brazil. pacheco.lucio@gmail.com
Background:
Recently, the model of end-stage liver disease (MELD) index has been used to select patients with acute liver failure (ALF) or transplantation. By the time the indication for orthotopic liver transplantation (OLT) is defined, the patient's clinical status may worsen.
Objective:
In this study, MELD was used to define patients beyond OLT.
Methods:
Among adult patients ALF was responsible for 17 OLT. Their medical records were reviewed to calculate the MELD score just before the OLT. MELD of the deceased patients after OLT (group 1, n=8), was compared with the MELD score of living recipients (group 2, n=9). Creatinine level, need for dialysis, use of vasoactive amines, and mechanical ventilation before OLT were also analyzed in these groups. A significant difference was defined when P<.05.
Results:
The mean MELD score+/-SD was 51.86+/-12.3 for group 1, and 38.47+/-7.1 for group 2 (P=.02). There was no difference between the creatinine values for patients in the 2 groups (P=.20). Also, the use of vasoactive amines or the need of dialysis before OLT were not different (P=.12 and P=.25, respectively). Group 1 was more frequently under mechanical ventilation, and showed a 4.29 relative risk for death after OLT.
Conclusion:
MELD score could be useful to define the prognosis of OLT among patients with ALF.
Insights
The Model of End-Stage Liver Disease (MELD) score can predict orthotopic liver transplantation (OLT) outcomes in acute liver failure (ALF) patients. Higher MELD scores before OLT correlated with increased post-transplant mortality risk in ALF patients.
Area of Science:
- Hepatology
- Transplantation Medicine
- Critical Care Medicine
Background:
- The Model of End-Stage Liver Disease (MELD) index is utilized for selecting patients for liver transplantation.
- Patient clinical status can deteriorate by the time orthotopic liver transplantation (OLT) is indicated.
- Acute liver failure (ALF) presents unique challenges in OLT candidate selection and post-transplant prognosis.
Purpose of the Study:
- To evaluate the utility of the MELD score in predicting outcomes for patients with ALF undergoing OLT.
- To identify pre-OLT factors associated with post-transplant mortality in ALF patients.
- To compare MELD scores between ALF patients who survived OLT and those who did not.
Main Methods:
- Retrospective review of adult ALF patients who underwent OLT.
- Calculation of MELD scores immediately prior to OLT.
- Comparison of MELD scores, creatinine levels, dialysis needs, vasoactive amine use, and mechanical ventilation status between deceased and living OLT recipients.
Main Results:
- Deceased OLT recipients (Group 1) had significantly higher mean MELD scores (51.86) compared to living recipients (Group 2, 38.47) (P=.02).
- Group 1 showed a 4.29 relative risk of death post-OLT and was more frequently on mechanical ventilation.
- No significant differences were observed in pre-OLT creatinine levels, need for dialysis, or vasoactive amine use between the groups.
Conclusions:
- The MELD score is a valuable tool for assessing the prognosis of OLT in patients with ALF.
- Pre-transplant mechanical ventilation may indicate a poorer outcome after OLT in ALF patients.
- Further research can refine MELD's role in managing ALF patients awaiting or undergoing OLT.
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