Acute liver failure

Acute Liver Failure

A medical illustration of acute liver failure.

Acute liver failure is a severe medical condition marked by rapid deterioration of liver function, leading to encephalopathy and coagulopathy. It often results from extensive damage to the liver parenchyma.

Overview

Acute liver failure (ALF) refers to the rapid loss of liver function in an individual without pre-existing liver disease. This critical condition is a medical emergency requiring immediate attention.

Causes

Acetaminophen Overdose

One of the most common causes of ALF in many regions is an overdose of acetaminophen, a widely used pain reliever and fever reducer.

Viral Infections

Various viral infections can also lead to ALF. Prominent among these are hepatitis viruses, including hepatitis A, hepatitis B, and hepatitis C.

Pathophysiology

Damage to the liver parenchyma, the functional tissue of the liver, leads to a rapid decline in liver function. This can result in:

Encephalopathy

Hepatic encephalopathy is a decline in brain function due to the liver's inability to remove toxins from the blood.

Coagulopathy

Coagulopathy, or impaired blood clotting, is another significant consequence of ALF due to the liver's reduced ability to produce clotting factors.

Diagnosis

Diagnosing ALF involves a combination of clinical evaluation, liver function tests, imaging studies, and sometimes liver biopsy.

Treatment

Treatment of ALF aims to manage symptoms and address the underlying cause. In severe cases, liver transplantation may be necessary.

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