hepatitis Flashcards

1
Q

Hep A type of virus

A

RNA

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2
Q

Hep A spread and peak age

A

faecal oral or shellfish, childhood

most common cause of Hep in returned travellers

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3
Q

Hep A acute or chronic?

A

acute, no chronic!

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4
Q

rare cause of Hep A

A

EBV

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5
Q

lab Hep A

A

clotted blood for serology

rise in hep A IgM - recent infection, IgG detectable for life

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6
Q

Hep A control

A

hygiene vaccine

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7
Q

Hep B type of virus

A

DNA

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8
Q

Hep B spread

A

sex, blood, mother to child

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9
Q

Hep B infectivity and chronic vs hep C

A

hep B - very infectious and less likely to become chronic

hep C - most patients chronic carriers, less infectious

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10
Q

rare cause of hep B

A

yellow fever virus

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11
Q

Hep B

HbsAg

A

infectious and infected

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12
Q

Hep B

antiHbsAg

A

vaccinated and recovered

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13
Q

Hep B

HbeAg

A

highly infective

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14
Q

Hep B

antiHbcAg

A

past infection

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15
Q

Hep B DNA titre

A

high in highly infectious patients

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16
Q

control of Hep B

A

minimise exposure

vaccination

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17
Q

antiHbe Hep B

A

low infectivity

18
Q

Hep C virus type

A

RNA flavivirus

19
Q

spread of Hep C

A

similar to hep B but less so by sex

20
Q

incubation period of Hep c

21
Q

incubation period of Hep B

A

4-6 months

22
Q

vaccine to hep C?

23
Q

out come of Hep C

A

chronic hepatitis or cirrhosis

24
Q

lab of Hep C

A

first test for Ab to Hep C

then PCR for Hep C RNA to see if active or past infection

25
which Hep exacerbates Hep B
D
26
Hep E spread
facial oral, zoonosis, person to person in IC/tropics
27
Hep E rare cause
cytomegalovirus
28
most common Hep in UK
E
29
vaccine for Hep E?
no
30
treatment for acute hepatitis
NO ANTIVIRALS monitor for encephalopathy or resolution public health immunise contacts
31
treatment for chronic hepatitis
antivirals and interferon alpha | hepatocellular cancer awareness or screening
32
how is interferon alpha available
peginterferon
33
list antivirals used
-fovir | adefovir, entecavir, tenofovir
34
contraindication to antivirals
liver cancer
35
how does one use peginterferon in Hep C patients
with ribavirin and protease inhibitor
36
peginterferon side effects
flu like
37
what is peginterferon not very successful in
Hep D
38
what is Hep D
incomplete RNA virus - needs HPB for its assembly
39
what does ribavarin have a side effect of
anaemia
40
hep C rare cause
herpes simplex virus
41
what is possible with peginterferon and antivirals
a sustained cure is possible with peginterferon antivirals only suppress
42
treatment of Hep B
peginterferon alone or antiviral therapy