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Liver failure-future challenges and remaining questions.

Peter Lemmer1, Josef Christian Pospiech1, Ali Canbay1

  • 1Department of Medicine, Ruhr University Bochum, University Hospital Knappschaftskrankenhaus Bochum, Bochum, Germany.

Annals of Translational Medicine
|May 14, 2021
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Summary
This summary is machine-generated.

This review clarifies liver failure definitions, proposing three types: acute liver failure (ALF), acute-on-chronic liver failure (AOCLF), and acute-on-liver-cirrhosis (AOCi). It highlights advances in understanding coagulation and prognostic markers for improved patient outcomes.

Keywords:
Hepatic insufficiencyliver failureprediction of prognosisrebalanced hemostasissurvival markers

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Area of Science:

  • Hepatology and Gastroenterology
  • Coagulation Science
  • Transplantation Medicine

Background:

  • The definition of acute liver failure (ALF) is established, but "acute-on-chronic liver failure" remains debated.
  • Recent advancements offer new insights into the coagulation system in hepatic insufficiency, introducing the concept of rebalanced hemostasis.
  • Emergency liver transplantation (ELT) has improved ALF prognosis, yet organ shortages necessitate better prognostic markers.

Purpose of the Study:

  • To review controversial aspects of liver failure and outline future research directions.
  • To propose a refined classification system differentiating ALF, acute-on-chronic liver failure (AOCLF), and acute-on-liver-cirrhosis (AOCi).
  • To discuss the evolving understanding of coagulation in liver disease and the role of advanced viscoelastic testing.

Main Methods:

  • Literature review of current research on liver failure definitions, coagulation mechanisms, and prognostic markers.
  • Analysis of the concept of rebalanced hemostasis in hepatic insufficiency.
  • Evaluation of viscoelastic testing methods for assessing coagulation in liver disease.

Main Results:

  • A proposed classification distinguishing three types of liver failure: ALF, AOCLF, and AOCi.
  • Elucidation of the "rebalanced hemostasis" concept in liver insufficiency, emphasizing the liver's role in synthesizing coagulation factors and inhibitors.
  • Demonstration of the superiority of viscoelastic tests over conventional methods for evaluating coagulation in liver insufficiency.

Conclusions:

  • A clearer classification of liver failure types is proposed to address definitional ambiguities.
  • Understanding rebalanced hemostasis and utilizing advanced viscoelastic tests can improve the management of coagulation disorders in liver disease.
  • Emerging prognostic markers and a better grasp of regenerative processes hold promise for improving survival and guiding treatment decisions in liver failure.