Hepatic Encephalopathy: Causes, Symptoms, Stages & Treatment

Hepatic encephalopathy is a short-term neurological disorder that often develops due to chronic and severe liver disease. It happens if the liver fails to effectively filter toxins from the bloodstream. These toxins come from food metabolism, alcohol, medications, and muscle activity. As they accumulate and reach the brain, they disrupt cognitive function.

Individuals with hepatic encephalopathy often struggle with confusion and difficulty processing information. Effective treatment can help eliminate toxins and potentially reverse the condition. However, as liver disease advances, the body’s response to treatment may decline. Also known as portosystemic encephalopathy, this condition is strongly associated with cirrhosis, where liver scarring disrupts blood flow and impairs toxin filtration.

Risk Factors

The prevalence of hepatic encephalopathy is notably connected to cirrhosis, a condition where liver scar tissue buildup hampers blood flow and toxin filtration. This underscores the liver’s role in effectively filtering natural toxins out of the body. Individuals with liver cirrhosis face an elevated risk of developing hepatic encephalopathy, with up to 50% of such cases eventually exhibiting symptoms.

Types

Hepatic encephalopathy presents in three distinct types:

• Type A: This variant emerges from acute liver failure in the absence of underlying chronic liver disease.
• Type B: Occurring in individuals with a liver shunt connecting two veins; type B arises without underlying liver disease.
• Type C: This variant is common, stemming from chronic liver disease and cirrhotic scarring.

Root Causes

Liver disease impairs the liver’s ability to filter natural toxins effectively. Consequently, toxins like ammonia accumulate in the bloodstream, potentially impairing temporary or permanent brain function. Chronic liver disease poses a risk for hepatic encephalopathy. The condition is typically triggered by factors such as alcohol use, medications affecting the nervous system, constipation, dehydration, digestive tract bleeding, infection, kidney disease, and liver shunts.

Symptoms

People with hepatic encephalopathy experience impaired brain function. Symptoms include:

• Anxiety or irritability.
• Cognitive impairment
• Coordination or balance problems
• Difficulty concentrating or short attention span
• Flapping hand motion
• Mood or personality changes
• Muscle twitches
• Reduced alertness
• Sleep problems
• Slurred speech

Grades

Hepatic encephalopathy (HE) advances in stages, from mild cognitive impairment to coma. The West Haven Criteria categorizes symptoms on a scale from 0 to 4, helping assess the severity of the condition.

• Stage 0 – Minimal HE: This stage involves slight alterations in memory and concentration.
• Stage 1 – Mild HE: Mood shifts and sleep disturbances characterize this stage.
• Stage 2 – Moderate HE: Individuals may exhibit inappropriate behavior, slurred speech, and difficulties with basic math.
• Stage 3 – Severe HE: Symptoms escalate to disorientation, extreme drowsiness, and anxiety.
• Stage 4 – Coma: The condition progresses to a state of coma.

Diagnosis

While no standard test exists for hepatic encephalopathy,

• Blood tests are pivotal in identifying infections and bleeding associated with liver disease.
• Additional tests are employed to differentiate between conditions presenting similar symptoms.
• These tests encompass MRI, CT scans, and EEG. Diagnosis predominantly relies on medical history, symptomatology, and clinical examination.

What is the Treatment for Hepatic Encephalopathy?

Healthcare providers first address any urgent conditions that may have triggered hepatic encephalopathy. Treatment for the underlying cause, such as liver disease or a portosystemic shunt, varies based on the specific condition.

For liver failure, whether acute or chronic, direct treatment options are limited. Instead, healthcare providers focus on minimizing stress factors affecting the liver and offering supportive care to manage symptoms and complications. If necessary, they may place the patient on a liver transplant waiting list. In portosystemic shunt cases, interventional radiology techniques may help redirect blood flow.

Reducing Neurotoxins in the Blood

To lower neurotoxin levels, healthcare providers target their source in the gut. Since certain gut bacteria produce these toxins, providers often prescribe antibiotics to reduce bacterial populations. They also use osmotic laxatives to speed up digestion, limiting toxin absorption into the bloodstream.

Medications

Commonly prescribed medications include:

• Rifaximin: A non-absorbable antibiotic that reduces toxin-producing bacteria. Neomycin may serve as an alternative.
• Lactulose: A synthetic laxative that draws water into the bowel.

Additional supportive medications include:

• Branched-chain amino acids: These supplements help build muscle and remove ammonia from the blood.
• Probiotics: These promote beneficial gut bacteria, reducing the presence of neurotoxin-producing bacteria.

Hemodialysis

In cases of acute liver failure, which is a medical emergency, hemodialysis may help treat Type A hepatic encephalopathy. This process removes toxins from the blood through a dialysis machine.

By combining these treatments, healthcare providers aim to manage symptoms, improve liver function, and enhance the patient’s overall quality of life.

Complications

Hepatic encephalopathy can lead to several serious problems, especially if it becomes severe. Some complications may cause long-term damage and may not be reversible.

Serious and life-threatening complications include:

• Brain swelling – The brain can become swollen, which increases pressure inside the skull.
• Brain herniation – Severe swelling may force parts of the brain to shift from their normal position. This is a medical emergency.
• Organ failure – Other organs in the body may stop working properly.

Other major complications that affect daily life include:

• Difficulty with daily activities or work – A person may struggle to complete normal tasks.
• Falls and injuries – Poor balance and confusion increase the risk of accidents.
• Long-lasting memory and attention problems – Thinking, focus, and memory may not fully return to normal.
• Trouble driving – Slow thinking and poor judgment can make driving unsafe.
• Sleep problems – Changes in sleep patterns are common.
• Frequent hospital stays – Severe episodes often require medical care in the hospital.
• Coma – In advanced cases, a person may become unconscious and unresponsive.
• Death – Hepatic encephalopathy can be fatal in severe situations.

Because these complications can be very serious, early medical care and close monitoring are important.

Prevention

You can reduce the risk of hepatic encephalopathy by caring for your liver and staying healthy.

• Avoid alcohol or drink only in moderation.
• Avoid high-fat foods and maintain a healthy weight.
• Do not share contaminated needles.

To prevent viral hepatitis:

• Wash your hands well after using the bathroom or changing a diaper.
• Avoid close contact with people who have viral hepatitis.
• Get vaccinated against hepatitis A and hepatitis B.

Healthy daily habits:

• Take prescribed medicines as directed.
• Eat protein from plant and dairy sources.
• Avoid alcohol, sedating medicines, and opioids.
• Stay hydrated.
• Prevent constipation.
• Treat infections early.

When to Seek Medical Attention?

It is crucial to promptly reach out to your doctor under specific circumstances:

If you are living with liver disease and observe manifestations indicative of hepatic encephalopathy, such as compromised cognitive function, alterations in mood, sleep disturbances, and hand flapping.

Furthermore, if you are grappling with liver disease and encounter constipation, it is vital to inform your doctor/ general physician/hepatologist. Regular bowel movements play a pivotal role in expelling toxins from the body, and reduced bowel movements can lead to toxin accumulation.

What Important Questions Should You Ask Your Doctor?

If you or a loved one is dealing with hepatic encephalopathy, addressing pertinent queries with your doctor can offer clarity and guidance. Some essential questions to consider include:

Impact of Liver Disease

• How is liver disease affecting my overall health and bodily functions?
• What are the specific ways in which liver disease is impacting my body?

Enhancing Liver Function

• Can I implement lifestyle changes or interventions to enhance liver function or slow the progression of liver disease?
• What strategies can I adopt to support optimal liver health?

Liver Disease Treatment

• What treatment options are available to manage my liver disease at this stage effectively?
• Which treatment approach is best suited to my current condition and needs?

Managing Hepatic Encephalopathy

• What is the recommended course of action for managing hepatic encephalopathy?
• How long is the anticipated duration of hepatic encephalopathy treatment?
• Are there any specific medications I should be cautious about in relation to hepatic encephalopathy?

Dietary Considerations

• Are there dietary modifications I should consider to support liver function and overall health?
• What dietary choices can contribute positively to my liver’s well-being?

Frequently Asked Questions