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Updated: May 23, 2026

Generation of a Rat Model of Acute Liver Failure by Combining 70% Partial Hepatectomy and Acetaminophen
Published on: November 27, 2019
Systematic review: acute liver failure - one disease, more than 40 definitions
K A Wlodzimirow1, S Eslami, A Abu-Hanna
1Department of Medical Informatics, Academic Medical Center, University of Amsterdam, The Netherlands.
Acute liver failure (ALF) definitions vary widely, hindering research comparability. Standardizing ALF definitions is crucial for improving prognostic studies and patient outcomes.
Area of Science:
- Hepatology
- Clinical Research Methodology
- Medical Informatics
Background:
- Acute liver failure (ALF) is a critical condition with a high mortality rate (60-80%).
- Variability in ALF definitions complicates prognostic research and clinical interpretation.
Purpose of the Study:
- To assess the explicitness and variability of acute liver failure definitions in prognostic literature.
- To identify key components contributing to the diversity of ALF definitions.
Main Methods:
- Systematic literature search of MEDLINE and EMBASE (1950-2012) for ALF prognostic studies.
- Independent screening of articles by three reviewers to ensure eligibility.
- Inclusion of English articles reporting original data from clinical trials or observational studies.
Main Results:
- 103 studies were included in the review.
- 87 studies utilized 41 distinct ALF definitions; 16 studies lacked explicit definitions.
- Definition variations stemmed from hepatic encephalopathy (HE) criteria, disease onset-to-HE intervals, coagulopathy, and pre-existing liver disease.
Conclusions:
- The heterogeneity of ALF definitions impedes study comparability and quantitative analysis.
- Improved reporting of ALF definitions in prognostic research is necessary.
- This review provides a foundation for developing a uniform ALF definition.
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