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Liver failure is a life threatening disease and anyone with the above symptoms should seek immediate medical attention. 
The diagnosis of liver failure involves blood work and examination of the liver. A small liver biopsy can be applied under local anesthesia. Individuals whom are at risk may undergo a biopsy by inserting a small tube down the neck and into the liver. This is done under X ray visualization and takes about 30 minutes. 
When liver failure develops and treatment is delayed, it can cause several complications  which includes:
This is due to fluid increase in the brain which deprives the brain of oxygen. This swelling accounts for the mental confusion, tremors and excess sleepiness .
The liver makes proteins which help stop bleeding. In liver failure these protein compounds are not made and the individual develops a tendency to bleed. The bleeding often occurs in the stomach and can be massive.
The majority of individuals with acute liver failure requires of attention in the intensive care unit. The aim of treatment is to decrease pressure in the brain, treat any infection, prevent bleeding and perform a dialysis if the kidney has stopped making urine. The treatment can be complex and requires delicate fluid balance, nutrition and monitoring of pressure in the brain. Many of these individuals develop difficult breathing and may be placed on a (mechanical ventilation) machine for days or weeks. The fluid from the abdomen may need to be repeatedly removed using a small needle. This small procedure is easily performed and allows one to breathe easier. However, repeated removal of this fluid also results in a loss of valuable body proteins.
If the patients condition continues to deteriorate, then a liver transplant may be required. The problem with a liver transplant is obtaining a donor. The surgery is also complex and is only done at relatively few specialist centres. Moreover after a liver transplant, many complications can occur and one has to remain on strong medications to prevent rejection of the liver. 
While one cannot completely prevent liver failure one can reduce the risk. This means doing the following:
In the years past, liver failure carried a very high mortality. However, with better knowledge, availability of liver transplantation and improved Intensive care unit monitoring, survival is often almost assured.