alexa Results of a prospective study of acute liver failure at 17 tertiary care centers in the United States.
Clinical Research

Clinical Research

Journal of Clinical Trials

Author(s): Ostapowicz G, Fontana RJ, Schidt FV, Larson A, Davern TJ,

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Abstract BACKGROUND: Because acute liver failure is rare, related data have been sparse. Studies have suggested that viral hepatitis is the most common underlying cause of this condition. OBJECTIVE: To describe the clinical features, presumed causes, and short-term outcomes of acute liver failure. DESIGN: Prospective cohort study. SETTING: 17 tertiary care centers participating in the U.S. Acute Liver Failure Study Group. PATIENTS: 308 consecutive patients with acute liver failure, admitted over a 41-month period. MEASUREMENTS: Detailed clinical and laboratory data collected during hospitalization, including outcome 3 weeks after study admission. RESULTS: 73\% of patients were women; median age was 38 years. Acetaminophen overdose was the most common apparent cause of acute liver failure, accounting for 39\% of cases. Idiosyncratic drug reactions were the presumptive cause in 13\% of cases, viral hepatitis A and B combined were implicated in 12\% of cases, and 17\% of cases were of indeterminate cause. Overall patient survival at 3 weeks was 67\%. Twenty-nine percent of patients had liver transplantation, and 43\% survived without transplantation. Short-term transplant-free survival varied greatly, from 68\% for patients with acetaminophen-related liver failure to 25\% and 17\% for those with other drug reactions and liver failure of indeterminate cause, respectively. Coma grade at admission appeared to be associated with outcome, but age and symptom duration did not. CONCLUSIONS: Acetaminophen overdose and idiosyncratic drug reactions have replaced viral hepatitis as the most frequent apparent causes of acute liver failure. Apparent cause and coma grade at admission were associated with outcome. Although transplantation may improve patient survival, it was unavailable or unnecessary for most patients.
This article was published in Ann Intern Med and referenced in Journal of Clinical Trials

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