The use of MELD scores in critically ill cirrhotic patients

Abstract

The Model for End-Stage Liver Disease (MELD) was originally created to predict survival following transjugular intrahepatic portosystemic shunt and was subsequently found to accurately predict mortality in patients with end-stage liver disease. It has been used in the United States for liver allocation since 2002, and implementation of the MELD score resulted in a reduction in total number of deaths on the waitlist and a reduction in waiting time. Critically ill cirrhotic patients have an in-hospital mortality greater than 50%. Although the MELD score was also found to be an accurate predictor of in-ICU mortality and in-hospital mortality after ICU admission in critically ill cirrhotic patients, the Sequential Organ Failure Assessment (SOFA) score appears to perform better in many studies. The Chronic Liver Failure Consortium Acute-onChronic Liver Failure (CLIF-C ACLF) score was later developed by using specific cut-points for each organ failure score system in CLIF patients to predict mortality in patients with ACLF. Neither the MELD nor SOFA score independently predicts post-liver transplantation mortality in cirrhotic patients with extrahepatic organ failure and should not be use as a delisting criterion for these patients. More data are needed to determine the accuracy of the CLIF-C ACLF score in predicting post-liver transplantation outcomes. Prospective evaluation of critically ill cirrhotic patients is needed to optimize liver organ allocation.