Drug-Induced Liver Injury and Acute Liver Failure

• Audio chapter
  Attending-narrated, listen on the commute.
• ABIM-format MCQs
  5-option vignettes with full wrong-answer teaching.
• Study guide
  Tables, decision trees, primary sources.
• AI tutor
  Chapter-grounded, answers the question you're stuck on.

What this chapter covers

• Section 19.1: DILI epidemiology and risk factors

  Drug-induced liver injury is the diagnosis the boards reward when a patient with new abnormal liver tests is taking almost anything, and the unifying claim is that essentially any drug, herbal product, or dietary supplement can produce essentially any pattern of injury.

• Section 19.2: CYP interactions and metabolic activation

  DILI mechanism is fundamentally a story about reactive metabolite generation, and the boards reward candidates who can explain why a particular drug becomes hepatotoxic in a particular host rather than memorizing offender lists.

• Section 19.3: Hy's Law and severity

  Hy's Law is the single rule the boards expect a candidate to apply at the bedside, and its power is that it identifies an early biochemical signature of serious DILI before fulminant failure becomes obvious.

• Section 19.4: Histology patterns by drug class

  DILI histology is patterned, and a candidate who knows the dominant pattern can often guess the drug class from the biopsy stem.

• Section 19.5: Acetaminophen toxicity and NAC

  Acetaminophen toxicity is the prototypical intrinsic DILI, the leading cause of acute liver failure in the United States and the United Kingdom, and the entity for which the boards expect candidates to know the mechanism, the dose-mortality relationship, the nomogram, and the antidote algorithm cold.

• Section 19.6: ALF definition, etiologies, and ALFSG distribution

  Acute liver failure is the small but lethal entity defined by the rapid loss of hepatic synthetic and detoxifying function in a previously healthy liver, and the boards reward candidates who can apply the definition cleanly because the management hinges on it.

• Section 19.7: Wilsonian and HSV ALF

  The two cause-specific ALF entities the boards single out are Wilsonian ALF and HSV ALF, because both have specific empiric therapies that should be started before confirmation, and both have recognition fingerprints that the candidate is expected to know cold.

• Section 19.8: King's College Criteria and ALF triage

  The King's College Criteria are the prognostic scoring tools developed at King's College Hospital in London that identify ALF patients who are unlikely to recover without transplantation, and the boards expect candidates to apply them to the bedside.

Podcast episodes

1. 01

   Induced Liver Injury and Acetaminophen

   Drug injury from mechanism through acetaminophen: metabolic activation to a reactive metabolite, Hy's Law as the severity threshold, the histology patterns that map to drug class, and acetaminophen toxicity treated with N-acetylcysteine guided by the Rumack-Matthew nomogram.

2. 02

   Acute Liver Failure and the King's College Criteria

   Acute liver failure: the definition that puts coagulopathy and encephalopathy together in under twenty-six weeks without prior cirrhosis, the etiology distribution led by acetaminophen, the special causes with their own recognition cues, and the King's College Criteria that triage who needs a transplant.