Outcomes in Adults With Acute Liver Failure Between 1998 and 2013: An Observational Cohort Study

Area of Science:

• Hepatology
• Critical Care Medicine
• Clinical Epidemiology

Background:

• Acute liver failure (ALF) is a severe condition with high mortality, necessitating intensive care and liver transplantation.
• ALF is defined by rapid hepatic dysfunction without pre-existing advanced liver disease.

Purpose of the Study:

• To investigate recent trends in the causes, severity, treatment, and outcomes of ALF in adult patients.
• To analyze changes over a 16-year period in U.S. tertiary care centers.

Main Methods:

• A prospective observational cohort study involving 2070 adult patients with ALF across 31 U.S. liver disease and transplant centers.
• Data collected included clinical features, disease severity, treatments, and 21-day outcomes.
• Analysis involved annual trend assessment and comparison between two 8-year periods (1998-2005 and 2006-2013).

Main Results:

• Overall ALF characteristics and severity remained consistent; however, 21-day survival rates significantly increased from 67.1% to 75.3%.
• Transplant-free survival (TFS) improved from 45.1% to 56.2%, and post-transplantation survival rose from 88.3% to 96.3%.
• Treatment changes included reduced blood product and vasopressor use, decreased mechanical ventilation, and increased N-acetylcysteine administration, particularly in non-acetaminophen ALF cases.

Conclusions:

• Despite little change in ALF characteristics or severity over 16 years, significant improvements in overall survival and TFS were observed.
• The study suggests that advancements in intensive care practices may have contributed to improved patient outcomes.
• Further research is warranted to elucidate the specific impact of evolving intensive care strategies on ALF survival.