Abstract
BACKGROUND: Acute-on-chronic liver failure (ACLF) is a complex disease with deteriorating liver and kidney function and associated organ failure in patients with chronic liver disease. METHODS: This is a concise overview for bedside and algorithmic decision making in patients with ACLF based on the most recent literature. RESULTS: Diagnosis and dynamics of ACLF can be easily monitored with the CLIF-C-ACLF calculator, which delivers grading for ACLF and estimates the risk of mortality, as the natural transplant-free course of ACLF is often fatal. Transplantation offers the best results in patients with ACLF that do not recover spontaneously. However, marginal donor organs should be avoided. CONCLUSION: ACLF is an increasingly relevant indication with good outcome after liver transplantation. Adequate donor rates may reduce the incidence by means of timely transplantation of acute decompensated patients in lower stages of urgency. Future challenges comprise specific allocation of donor organs to this group of patients that are at a similar risk of mortality when compared to acute liver failure.