Hepatitis B Essay

866 Words2 Pages

Hepatitis B
Hepatitis B is a DNA viral infection that causes damage and inflammation to the liver. It was first discovered in 1965 by Dr. Baruch Blumberg. The HBV virus is very contagious and is even thought to be the most serious form of viral hepatitis and the most common viral infection on Earth. “HBV is 100 times more infectious than HIV.” (Green, 2002, pg. 7) The virus can survive for about one week outside the body on a dry surface. According to Green (2002, pg. 7), “One in twenty Americans has been infected with the virus at some point in their lives.” Between the ages of 15-39 is when 75% of new HBV infections occur, according to Green (2002, pg.8).
There are four phases of Hepatitis B: infection, inflammation, fibrosis, and cirrhosis. In the first phase, HBV invades the liver and goes for the nucleus, where it releases contents of DNA and polymerase into the surroundings. It then maneuvers its way to the cell’s components and enzymes. The polymerase sways the liver cells to make segments of the HBV DNA from RNA. The virus makes liver cells create spare parts for other HBV viruses. Replicas are released from liver cell into the bloodstream, destroying host cell and infecting other healthy liver cells. This entire process can take a few hours to occur, but must continue multiple times for serious damage to occur. The second phase is inflammation. Inflammation is caused by lymphocytes trying to get rid of the virus, but they also release harmful chemicals that damage the cells and take part in damaging the liver. The third phase is fibrosis. Fibrosis is scar tissue caused by inflammation and chronic infection. According to Everson and Weinburg, (2002, pg. 64) “Only 5/10% of people develop chronic Hepatitis B from acute Hepa...

... middle of paper ...

...ed with this drug. One of the major concerns for this treatment is the development of kidney problems, but are usually reversible after treatment is ceased. “Approximately 90-95% of adults with Hepatitis B recover and remain immune to re-infection throughout their lifetime,”(Everson and Weinburg, 2002, pg.142-143)
The sonographic appearance varies depending on of the Hepatitis is acute or chronic. In acute hepatitis you will see a normal texture or portal veins will be more prominent. The liver appears hypoechoic. Attenuation might be present in acute Hepatitis. Gallbladder walls are thickened and hepatosplenomegaly. In chronic Hepatitis the parenchyma will appear coarsed with decreased brightness of the portal triad. Attentuaion is not as great in chronic Hepatitis. Fibrosis may occur with soft shadowing. The size of the liver is decreased and appears hyperechoic.

More about Hepatitis B Essay

Open Document