Acute-on-chronic liver failure before liver transplantation: impact on posttransplant outcomes.

BACKGROUND: Acute decompensation in patients with chronic liver disease, resulting from acute kidney injury and infections, leads to significant morbidity and mortality. It is unclear whether patients who develop acute-on-chronic liver failure (ACLF) have poor outcomes after liver transplantation.

METHODS: We performed a single-center retrospective cohort study of 332 patients to evaluate the effect of ACLF, defined as an acute rise in the Model for End-Stage Liver Disease score of more than 5 within 4 weeks before transplantation, on posttransplant outcomes including stage 4 chronic kidney disease, death, recurrent cirrhosis, or graft failure requiring retransplantation.

RESULTS AND CONCLUSIONS: One hundred fifty-seven patients in the study had ACLF and 175 patients had no ACLF (non-ACLF) pretransplant. Thirty-four patients in the entire cohort received dual organs, 10 of them (29.4%) had ACLF. Seventy-six percent of the patients with ACLF had acute kidney injury as their reason for decompensation and 23.6% had an infection. Mean Model for End-Stage Liver Disease score at transplant was significantly different between the groups (ACLF 28.77 vs. non-ACLF 21.23, P<0.0001). A total of 16.6% of the patients achieved an estimated glomerular filtration rate (eGFR) less than 30 mL/min, 21% of patients died, 12.3% developed cirrhosis, and 7.5% received a second transplant. There was no difference in mean eGFR between the ACLF and non-ACLF cohorts at 3 years posttransplant (56.35 mL/min vs. 59.93 mL/min, respectively, P=0.27). On multivariate analysis, ACLF was not significantly associated with eGFR less than 30 mL/min, death, recurrent cirrhosis, or retransplantation when adjusted for potential confounders.