The flashcards below were created by user
kyleannkelsey
on FreezingBlue Flashcards.
-
Toxins that are not filtered or excreted properly due to viral hepatitis often settle in the skin causeing what?
Pruritis
-
What type of virus is hepatitis A?
RNA virus
-
Which strain of Hepatitis is the most benign?
Hep A
-
How does Hep A spread?
Fecal contamination of water and food
-
What is the incubation period for Hep A?
2-6 weeks
-
The symptoms of Hep A are insiduous (T/F)?
False, they are abrupt
-
Which type of Hepatitis has no carrier state, no chronic hepatitis, rarely leads to liver failure and is rarely fatal?
Hep A
-
Hep A has a high incidence in the United States?
False, very low
-
Why has Hep A declined 92% since 1995 in the US?
Introduction of the Hep A vaccine
-
The incidence of Hep A in the US can be described as:
Declining due to the introduction of a vaccine in 1995
-
What countries have very low Hep A?
US, Canada and Australia
-
How many doses are in the Hep A series?
2
-
How many single anitgen hep A vaccines exist?
2
-
HAVRIX contains what?
inactivated Hep A virus
-
HAVRIX protects against what?
HEP A
-
How do you diagnose actuet Hep A illness?
elevated IgM anti-hepatitis A antibodies in teh serum
-
How do you detect A past infection with Hep A?
elevated IgG anti-hepatitis A anitbodies in the serum (no IgM)
-
What period do Hep A viruses shed into teh fecal matter?
2 weeks before to 1 week after illness onset
-
Where do Hep A viruses shed from?
feces
-
Hep B is what type of virus?
DNA virus
-
Hep B is a completley benign disease (T/F)?
False, it is potentially serious
-
What is the incubation period for Hep B?
1-6 months
-
What type of onset is experienced with Hep B?
insiduous
-
How is Hep B diagnosed?
detection in serum of antigens and antibodies (more comlex than hep A)
-
Describe the morphology of the Hep B virus?
- From out to in:
- HBs surface porteins
- Protein coat
- Core protein HBc
- DNA
- DNA polymerase
-
What are the routes of transmission for Hep B?
- Parenteral blood and body fluids
- Sexual intercourse
- Vertical (mom to babe)
-
Where is teh incidence of Hep B very high (>8%)?
Africa and southeast Asia
-
What are the Hep B risk factors?
- Sex w/o long term monogamous relationship
- Men with men
- IV drug users
- Live with HBV infected indivual
- Health care and public saftey workers
- hemodialysis patients
- Travelers to Afric and Asia
-
Sex w/o monagamy, sex between men, IV drug use, living with an infected person, Healthcare or Public saftey workers, Hemodialysis patients and travelers all have an increaed risk of what Hep strain?
B
-
During Hep B illness what levels of serum are highest?
- first: HBs antigen
- then: HBe antigen
- third: Anti-HBc
-
What serum level remains high throughout Hep B infection?
Anti-HBc
-
What serum level goes down after the illness from Hep B?
IgM Anit-HBc
-
What appears in the serum before the onset of symptoms in Hep B?
HBs Antigen
-
How long do HBs antigens remain high in the serum?
3-6 months
-
Presence of HBs or more than 6 months indicates what?
Carrier state
|
|