Gastroenterology Blogs - Page 5

ACLF vs ALF: How to Tell Them Apart and Why It Changes Everything About Treatment

A 58-year-old man with known alcohol-related cirrhosis is admitted with jaundice, confusion, and a bilirubin of 18 mg/dL. Three beds down, a 24-year-old woman with no liver history presents with the same triad — jaundice, encephalopathy, bilirubin of 22 mg/dL — after two weeks of paracetamol overuse. Both patients look critically unwell. Both will be labelled "liver failure" in the initial clerking note. But the diagnosis, prognosis, and management for these two patients are so fundamentally different that conflating them is one of the more consequential errors in hepatology.The distinction between acute-on-chronic liver failure and acute liver failure matters not just academically but at every decision point: who gets admitted to the ICU, who gets listed for transplant, which vasopressors are appropriate, how long you wait before escalating. The challenge is that on a busy admissions ward, the two can look identical for the first few hours. Both present with jaundice, encephalopathy, and coagulopathy. Both can deteriorate within 24 hours. And the underlying liver disease in ACLF may never have been formally diagnosed before. This post is specifically about the diagnostic framework that separates them — and what changes downstream once you get it right.