hepatitis Flashcards

1
Q

what is a cause of chronic liver disease

A

chronic hepatitis

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2
Q

what do hepatocytes show

A

degenerative changes (swelling, vacuolation)

necrosis
shrink

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3
Q

what inflammatory cells are present

A
  • lymphocytes
  • plasma cells
  • lymphoid follicles
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4
Q

what are the causes of acute hepatitis

A

A

E

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5
Q

what virus is hep A

A

RNA

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6
Q

how does hep A spread

A

faecal-oral

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7
Q

is there a vaccine for hep A

A

vaccine

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8
Q

what virus is hep B

A

DNA

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9
Q

is hep B spread by blood

A

yes

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10
Q

is hep B spread by salvia

A

yes

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11
Q

when is hepatitis A usually seen

A

autumn

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12
Q

who does hep A affect

A

children and young adults

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13
Q

where does hep A arise from

A

ingestion of contaminated food or water

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14
Q

what kind of virus is it

A

picornavirus

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15
Q

where does hep A replicate

A

liver

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16
Q

where is hep A excreted

A

bile and then faeces

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17
Q

symptoms of hep A

A
  • nausea
  • anorexia
  • jaundice

then

  • dark urine
  • pale stools
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18
Q

why do you get dark urine and pale stools

A

intrahepatic cholestasis

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19
Q

what is liver like in hep A

A

enlarged

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20
Q

what test for hepatitis A

A

anti-HAV IgM = acute

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21
Q

treatment for hepatitis A

A

vaccine

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22
Q

hep B transmission

A
  • vertical = mother to child in womb
  • horizontal = abrasions usually children
    = IV drug use
    = male to male sex
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23
Q

what does hep B look like

A
  • inner core

- outer envelope (HBsAG).

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24
Q

what is Hep B core formed from

A

HBcAG

- contains double stranded DNA

25
Q

what is HBeAG

A

protein formed via specific self cleavage

secreted separately by the cell

26
Q

what happens to hep B once it enters the cell

A

it loses its coat

27
Q

what can HBV cause

A

hepatocellular carcinoma

28
Q

symptoms of HBV

A
  • rash
  • polyarthritis
  • fever
29
Q

initial test for HBV

A

HBsAg is looked for

30
Q

what is looked for in acute HBV

A

anti-abc IgM

31
Q

is there a vaccine for HBV

A

yes

32
Q

what can HBsAg do to cytoplasm

A

give ground glass appearance

33
Q

what is oral antiviral therapy for HBV

A

entecavir
tenofovir
lamivudine

34
Q

what is HDV enclosed in

A

shell of HBsAg

35
Q

what is HDV always present with

A

hep B

36
Q

how is HDV diagnosed

A

serum IgM anti-HDV

37
Q

what usually develops with HDV

A

cirrhosis

38
Q

what is chronic HDV confirmed by

A

finding HDV in the. liver

or

HDV RNA in serum by PCR

39
Q

treatment for patients with active liver disease

A

pegylated interferon-alfa-2a

for 12 months

40
Q

how is HCV transmitted

A

blood to blood

e.g. IV drug user

41
Q

what is HCV

A

single stranded RNA

42
Q

what do some patient with HCV get

A

mild influenza

- jaundice

43
Q

testing for HCV

A

anti-HCV test

44
Q

HEV is usually in

A

contaminated water

45
Q

is HEV zoonotic

A

yes

46
Q

what is used for HEV diagnosis

A

ELISA for IgG and IgM

47
Q

how to prevent and control HEV

A

good sanitation

hygiene

48
Q

what is most common hepatitis

A

C

49
Q

is there a vaccine for hepatitis C

A

no

50
Q

how is hepatitis B found

A

only with HepB

51
Q

where is hepatitis E common

A

in tropics

52
Q

what is HBsAg

A

hep B surface antigen

53
Q

what does HBsAg mean for the patient

A

they are currently infected with Hep B

54
Q

what is Anti-HBs

A

hep B surface antibody

55
Q

what does presence of Anti-HBs indicate

A

recovery and immunity

= means successfully vaccinated

56
Q

what is Anti-HBc

A

hep B core antibody

57
Q

when does Anti-HBc appear

A

onset of acute Hep B and stays for life

  • indicates previous or ongoing infection
58
Q

is hep A acute or chronic

A

acute

59
Q

is there a vaccine for Hep B

A

yes