Clinical and Neurologic Outcomes in Acetaminophen-Induced Acute Liver Failure: A 21-Year Multicenter Cohort Study

US Acute Liver Failure Study Group

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Background & Aims: Acetaminophen (APAP)-induced acute liver failure (ALF) is a rare disease associated with high mortality rates. This study aimed to evaluate changes in interventions, psychosocial profile, and clinical outcomes over a 21-year period using data from the ALF Study Group registry. Methods: A retrospective review of this prospective, multicenter cohort study of all APAP–ALF patients enrolled during the study period (1998–2018) was completed. Primary outcomes evaluated were the 21-day transplant-free survival (TFS) and neurologic complications. Covariates evaluated included enrollment cohort (early, 1998–2007; recent, 2008–2018), intentionality, psychiatric comorbidity, and use of organ support including continuous renal replacement therapy (CRRT). Results: Of 1190 APAP–ALF patients, recent cohort patients (n = 608) had significantly improved TFS (recent, 69.8% vs early, 61.7%; P =.005). Recent cohort patients were more likely to receive CRRT (22.2% vs 7.6%; P <.001), and less likely to develop intracranial hypertension (29.9% vs 51.5%; P <.001) or die by day 21 from cerebral edema (4.5% vs 11.6%; P <.001). Grouped by TFS status (non-TFS, n = 365 vs TFS, n = 704), there were no differences in psychiatric comorbidity (51.5% vs 55.0%; P =.28) or intentionality (intentional, 39.7% vs 41.6%; P =.58). On multivariable logistic regression adjusting for vasopressor support, development of grade 3/4 hepatic encephalopathy, King's College criteria, and MELD score, the use of CRRT (odds ratio, 1.62; P =.023) was associated with significantly increased TFS (c-statistic, 0.86). In a second model adjusting for the same covariates, recent enrollment was associated significantly with TFS (odds ratio, 1.42; P =.034; c-statistic, 0.86). Conclusions: TFS in APAP–ALF has improved in recent years and rates of intracranial hypertension/cerebral edema have decreased, possibly related to increased CRRT use.

Original languageEnglish (US)
JournalClinical Gastroenterology and Hepatology
StateAccepted/In press - 2020


  • Cerebral Edema
  • Continuous Renal Replacement Therapy Intracranial Hypertension
  • Transplant-Free Survival
  • Transplantation

ASJC Scopus subject areas

  • Hepatology
  • Gastroenterology


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