Hepatitis Things Cause I Don't Get It Flashcards
The presence of this antigen indicates that the patient is currently infected with Hepatitis B; its persistence for 6 months or longer indicates chronic infection. Earliest indicator of acute infection.
Hepatits B SURFACE antigen (HBsAg)
Protein which is encoded by the Hepatitis B virus and is expressed when the virus is replicating at a high level. It is often found in patients who have abnormal LFTs and chronic Hepatitis. Its presence indicates high infectivity.
Hepatitis B ENVELOPE antigen
If this is positive in a patient, it means that at some point in their life they have been exposed to Hepatitis B.
Hepatits B CORE antibody (HBcAb) There is no serologic test for the antigen. The only way to be positive for the core antibody is if you have been infected with the virus, since the vaccine does NOT include the Hep B core.
When present, it sometimes indicates that the level of replication of the Hepatitis B virus is lower.. If this is present a person is most likely in the process of fighting off a recurrent Hep B infection.
Hepatitis B ENVELOPE antibody
If produced in large amounts (>100 IU) it usually indicates that the patient has cleared the virus (if they have been infected) and are now immune. Could also indicate that the person was vaccinated and has immunity to Hep B.
HBsAb (Hepatitis B SURFACE antibody)
Drug that specifically inhibits HBV DNA polymerase; SUPPRESSES HBV replication
Lamivudine (Epivir)
You would check this level if you were assessing for an acute Hep A infection
Anti-hepatitis A virus IgM
You would check this level if you were assessing for a chronic hep A infection
Anti-hepatitis A virus IgG
How long will the hepatitis A IgM be positive for?
3-6 months
How long will the hepatitis A IgG be positive for?
10 years
With hepatitis A, what will the AST and ALT levels be?
May exceed levels of 1000 (8X elevated)
How do you treat hepatitis A?
Self limiting - supportive
What lab result would tell you that you need to treat the person with hepatitis B?
HBeAg - This is positive when the virus is replicating at a high level!!!
What does fulminant hepatitis B result from?
Massive immune-mediated lysis of infected hepatocytes
What is typically used for 6 months in the treatment of Hepatitis B and C
Peg-Interferon Alpha