What Causes Liver Cirrhosis?
Posted by Healthfitline
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Monday, February 18, 2013
Cirrhosis is a chronic disease of the liver, characterized by destruction and replacement of liver health tissues with scars or fibrosis. Liver is an important organ that play a vital role in detoxification and in the elimination process. In liver cirrhosis, there is constant damage to the liver tissues from illness or other causes, occuring over a long period of time. When this happens, it reaches a time when the liver cannot be able to function fully due to scarring or damage. Without prompt medical intervention to try and slow down the disease progression process, liver cirrhosis can eventually lead to other serious complications.
Causes of Liver Cirrhosis
There are four main different types of liver cirrhosis, classified according to the possible causes;
Alcoholic Cirrhosis
Alcoholic cirrhosis also known as Laennec's cirrhosis - The scared tissues are found around the portal areas. Alcoholic cirrhosis is the most common type of liver cirrhosis, frequently resulting from chronic alcoholism. Other causes of Laennec's cirrhosis include; portal hypertension and malnutrition.
Post Necrotic Cirrhosis
In post necrotic cirrhosis there is present of broad bands of scar within the liver tissues. Causes of post necrotic cirrhosis include; hepatitis viral infections and hepatotoxic drugs.
Biliary Cirrhosis
In biliary cirrhosis the scaring occurs in the liver, around or near the biliary ducts. The most common cause fo biliary cirrhosis is chronic biliary obstruction (biliary atresia) or biliary infection (cholangitis).
Right-Sided Congestive Heart Failure (RSCHF)
The condition in which the right side of the heart loses its ability to pump blood to other parts of the body. When this happens, the liver also becomes congested due to blood pooling in the portal vein (liver is connected to the heart through a vein called the portal vein). This leads to swelling of the liver cells (hepatocytes) and eventually, the liver tissues may get scarred or damaged.
Other causes of liver cirrhosis include;
- Fatty liver disease (non alcoholic)
- Excessive iron or buildup of iron in the blood (hemocromatosis).
- Autoimmune diseases that affects the liver.
- Some parasitic infections.
- Hereditary - family history of disorders of liver diseases.
- Not known the cause (Cryptogenic cirrhosis) - almost 20% of liver cirrhosis cases are idiopathic.
Symptoms of Liver Cirrhosis
The signs and symptoms experienced by an individual suffering from liver cirrhosis, depends on the stage of the disease progression. In the early stages, no symptoms are present and the disease may only be discovered during a routine physical examination.
Early Signs and symptoms of Liver Cirrhosis (Compensated Cirrhosis) may include;
- Low grade intermittent fever
- Unexplained nose bleeding
- Ankle swelling or edema
- Feeling of ingestion especially in the morning.
- Abdominal bloating and pain
- Palmar redness
- Nausea and vomiting
- Weight loss
- Anorexia
- Vascular spiders (dilation of the superficial blood capillaries).
- Firm enlarged liver and spleen upon palpation.
Late Signs and Symptoms of Liver Cirrhosis (Uncompensated Cirrhosis) may include;
- Accumulation of fluid in the abdomen (ascites).
- Yellowish discloration of the skin and the eyes (jaundice).
- Weakness and fatigue
- Loss of appetite
- Constant low grade fever
- Bruising easily
- Nose bleeding
- Muscle wasting
- Hypotension
- Purpura (spot on the skin caused by internal bleeding due to decreased platelet count).
Possible complications associated with liver cirrhosis include;
Portal hypertension - due to increased pressure on the portal vein.
Ascites - accumulation of fluids in the abdomen due to decreased metabolism of carbohydrates, protein and fats.
Peritonitis - A fatal complication of liver cirrhosis that leads to infection of the abdomen cavity.
Gastrointestinal varices - The obstructed blood vessels results in formation of collateral blood vessels (extra blood capillaries that help to shunt blood away from the portal vessels to the blood vessels). This results into prominent, distented blood vessels that can easily be seen on the abdomen (caput medusae) and since these vessels are not meant to carry high blood pressure that is caused by cirrhosis, they may eventually rupture, leading to severe bleeding.
Mental Deterioration - The damaged liver cannot be able to convert ammonia to urea, leading to accumulation of ammonia in the blood. If ammonia crosses the blood brain barrier and enters into the brain, this leads to increased level of ammonia in the blood, causing what is known as hepatic encephalopathy. Patients become dis-oriented with impaired cognitive functions, neuromascular problems and eventually, it can lead to a hepatic coma.
Vitamin Deficiencies and Anemia - A damaged liver is unable to absorb fat soluble vitamins (vitamin A, D E and K). This can result to serious vitamin deficiencies and bleeding tendencies, since vitamin K plays an important role in blood clotting and in preventing bleeding. This is the reason why individuals diagnosed with advanced stage of liver cirrhosis tend to bleed and bluise more often. Lack of appetite, impaired gastrointestinal and impaired liver function leads to anemia, manifested by frequent fatigue.
Cirrhosis Diagnostic Tests
Tests used to diagnose liver cirrhosis include;
- Liver Enzyme Function Tests - Serum alkaline phosphatase (ALP), AST, ALT, GGT and serum cholinesterase levels.
- Bilirubin test - to measure the level of bilirubin in the blood.
- Ultrasound tests - to visualize the scarred liver tissues.
- MRI , Radioisotope and CT scan - to measure the hepatic blood flows, extent of the obstruction and liver size.
- Liver biopsy - to identify and rule out other causes of the liver cirrhosis.
- Arterial blood gas - to measure the level of oxygen and carbondioxide in the blood.
Liver Cirrhosis Treatment and Management
The kind of treatment given is determined by the presenting signs and symptoms, what is causing the liver damage and the extent of the disease progression by the time of diagnosis. Liver cirrhosis is not reversible but the progression of the disease can be halted and by treating the resulting symptoms.
For example. If the cause of liver cirrhosis is alcohol, patient is advised to stop taking alcohol. Vitamin supplements and nutritional support may be given for vitamin deficiencies and to improve over all nutritional status of the patient. If the cause of liver cirrhosis is hepatitis, anti-viral medications may be given. If the presenting sign and symptom is ascites, a potassium-sparing diuretic may be prescribed. Patient may also be advised to limit fluid intake, sodium intake and to increase protein in the diet.
How to Manage Some of the Complications Caused by Liver Cirrhosis
Dilated collaterals may be managed by preventing rupturing and by inserting a tube known as sengstaken blakemore that is used to apply direct pressure on the esophageal varices to control bleeding.
Hepatic encephalopathy - Medication to decrease the level of ammonia in the blood (lactulose to help in excretion and neomycin to decrease the production of ammonia) and a low protein diet may be ordered.
Infection - Antibiotics for bacterial infections. Limiting visitors and proper hand washing is necessary to prevent spread of infection.
Skin pruritus
Proper skin care and collodial oatmeal bath may help to ease itchness.
Liver Cirrhosis Prevention
- Stop drinking alcohol and if you really have to drink, drink moderately.
- Maintain a health weight by regular exercises.
- Get vaccinated against hepatitis viruses.
- Do not share your personal belongings like a razor and syringes with anyone to avoid getting infected with hepatitis B and C viruses.
- Always practice safe sex if you have multiple partners.
- Avoid using over the counter drugs or medications that may have a negative effect on the liver.
- Eat a healthy diet with less fat.
- Seek medical help if you are concerned about your health or if you suspect you are at a risk of acquiring liver cirrhosis.
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