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Liver Failure

Liver-Failure

Liver failure means the liver has lost so much of its functional capacity that it can no longer sustain the body’s basic needs. It’s one of the most serious conditions in medicine, and the speed of diagnosis and management directly affects outcomes.

Two Very Different Presentations

Acute Liver Failure (ALF) is the sudden, rapid loss of liver function in a person with no prior liver disease. It develops over days to weeks. Acute-on-Chronic Liver Failure (ACLF) is what happens when someone with chronic liver disease experiences a sudden deterioration triggered by a new insult – infection, bleeding, alcohol, or a superimposed viral infection. Both are life-threatening, but they have different causes, management approaches, and prognoses.

Common Causes

Acute Liver Failure: Paracetamol (acetaminophen) overdose; anti-tuberculosis drugs (Rifampicin + Isoniazid + Pyrazinamide) – a significant cause in India; acute viral hepatitis (A, B, or E); autoimmune hepatitis; Budd-Chiari syndrome; Wilson’s disease; and herbal and traditional medicine toxicity.

Acute-on-Chronic Liver Failure: Bacterial infections (spontaneous bacterial peritonitis, pneumonia), gastrointestinal bleeding, alcohol relapse, superimposed viral hepatitis, and acute kidney injury.

Warning Signs – Don’t Wait

  • Rapid onset of jaundice (yellow skin or eyes)
  • Confusion, disorientation, or extreme drowsiness (hepatic encephalopathy)
  • Abnormal bleeding – from gums, nose, IV sites, or internally
  • Swelling of the abdomen
  • Extreme fatigue and weakness

Any of these require urgent hospital evaluation. This is not something to wait out at home.

Diagnosis

  • Prothrombin time (INR) – INR >1.5 without cirrhosis suggests significant liver failure
  • Serum bilirubin, LFTs, serum ammonia – for assessing encephalopathy severity
  • Blood glucose – hypoglycaemia is common
  • Viral serology – to identify the cause
  • Ultrasound with Doppler, CT scan – for structural or vascular causes

Management

Acute liver failure requires ICU-level care at a centre with liver transplant capability whenever possible.

  • Treating the underlying cause – N-acetylcysteine for paracetamol; antivirals for Hepatitis B; immunosuppression for autoimmune hepatitis
  • Correcting hypoglycaemia and coagulopathy
  • Managing cerebral oedema – a major cause of death in ALF
  • Treating infections aggressively
  • Lactulose and rifaximin for encephalopathy

Liver transplantation is the only definitive treatment when the liver cannot recover. The King’s College Criteria and MELD score guide listing decisions. Timing is critical.

Yes - in some cases. Whether the liver can recover depends heavily on the cause. Paracetamol-induced ALF treated promptly with N-acetylcysteine has a good chance of spontaneous recovery. Hepatitis A or E-related ALF often recovers with supportive care. Causes like drug-induced liver injury from anti-TB drugs or Wilson's disease in crisis are less likely to recover without transplantation. Intensive supportive care buys time for recovery or transplant.

MELD (Model for End-stage Liver Disease) is a scoring system based on bilirubin, INR, and creatinine - values that reflect liver and kidney function. It predicts 90-day mortality and is used to prioritize patients on the transplant waiting list. A higher MELD score means more urgent need. In acute liver failure, the King's College Criteria and MELD together guide decisions about when to list a patient for emergency transplantation.

Many traditional and herbal preparations contain compounds that are directly hepatotoxic. Certain Ayurvedic formulations with heavy metals, kava, green tea extract, and various traditional Chinese medicines have been documented causes of acute liver failure. 'Natural' does not mean safe. If you have liver disease or are on liver medications, any herbal supplement should be discussed with your hepatologist before use.

Acute liver failure can develop within days to a few weeks - which is what makes it so dangerous. Paracetamol overdose can cause liver failure within 3–5 days. In ACLF, a patient who was compensated yesterday can deteriorate sharply within 24–48 hours of a precipitating event like infection or bleeding. Speed of recognition and transfer to a specialist centre is often what determines survival. Worried about liver failure in yourself or a family member? This needs immediate specialist evaluation - every hour matters.

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