Hepatitis Flashcards

1
Q

Acute hepatitis is usually symptomatic. T/F?

A

True

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2
Q

How is chronic hepatitis defined?

A

Hepatitis virus which is present for more than 6 months

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3
Q

Chronic hepatitis is usually symptomatic. T/F?

A

False - it is usually asymptomatic

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4
Q

What are the routes of transmission of hepatitis virus?

A

Facial oral route

Blood borne

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5
Q

What can cause hepatitis?

A
Hepatitis A,B,C,D,E
EBV,CMV,t toxoplasmosis
leptospirosis
Q fever
syphilis
malaria
VHF
toxins
drugs
alcohol
autoimmune
wilson's disease
haemochromatosis
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6
Q

Which strains of hepatitis are RNA viruses?

A

Hepatitis A,C,D,E

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7
Q

Which strain of hepatitis is a DNA viruses?

A

Hepatitis B

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8
Q

How is hepatitis A transmitted?

A

Faecal-oral route and has a human reservoir

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9
Q

There is chronic carriage of hepatitis A. T/F?

A

False

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10
Q

In what group of patients can there be chronic carriage of hepatitis E?

A

In immunosuppressed patients

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11
Q

How is chronic hepatitis E treated?

A

Ribavirin

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12
Q

What is the incubation period for hepatitis A?

A

30 days

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13
Q

There is good immunity after infection of hepatitis A. T/F?

A

True

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14
Q

How does age determine the severity of hepatitis A infection?

A

It is usually symptomatic in children <5 years and is symptomatic in adults

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15
Q

How is hepatitis A infection treated?

A

No specific treatment as it is self limiting

Maintain hydration and avoid alcohol

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16
Q

What tests will be positive in acute hepatitis A?

A

IgM positive

Hepatitis A in blood or stool

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17
Q

What test will be positive in previous HAV infection?

A

IgG

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18
Q

Who is the hepatitis A vaccine given to?

A

Homosexual men
IVDUs
Chronic liver disease

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19
Q

What type of vaccine is the hepatitis A vaccine?

A

Inactivated virus vaccine

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20
Q

What can be used as an alternative to vaccination for hepatitis A in those with <4 weeks to travel or those who are vaccine allergic?

A

Hepatitis immunoglobulin

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21
Q

How can hepatitis E be transmitted?

A

Faecal-oral toute, pork products, minimal person-to-person spread

22
Q

In what group of patients is mortality from hepatitis E highest?

A

Pregnant women

23
Q

What are the possible neurological complications of hepatitis E infection?

A

Guillain-barre syndrome
Encephalitis
Ataxia
Myopathy

24
Q

What genotype of hepatitis E is particularly associated with neurological complications?

25
HBV vaccination is given routinely in most countries. T/F?
True
26
How can HBV be transmitted?
``` Transfusion Fluid Organ/tissue transplantation Child to child Contaminated needles/syringes Mother to baby ```
27
What is the incubation period of hepatitis B?
2-6 months
28
How does age determine the severity and chronicity of hepatitis A infection?
Infection at birth or childhood is usually asymptomatic but leads to chronic infection Infection as an adult is usually symptomatic but is cleared
29
What are the signs and symptoms of hepatitis B?
Weight loss, abdominal pain, fever, cachexia, mass in abdomen and bloody ascites
30
What are the potential complications of HBV?
Cirrhosis Decompensation Hepatocellular carcinoma Death
31
In HBV serology testing, what is a marker of current infection?
sAg
32
In HBV serology testing, what is a marker of immunity due to either previous infection or vaccination?
sAb
33
In HBV serology testing, what is only positive in patient swoon have have infection (previous or current) and not in vaccination?
cAb
34
In HBV serology testing, what indicates high infectivity?
eAg
35
In HBV serology testing, what indicates low infectivity?
eAb
36
How is acute HBV treated?
It is not treated as it usually resolves and clears
37
Which patients require treatment for chronic HBV?
Those with liver inflammation (seen on LFT or biopsy) or fibrosis (seen on fibroscan or biopsy)
38
What is the possible treatment for HBV?
Interferon (immunomodulatory) | Tenofevir/entecavir which suppress viral replication
39
How is HBV infection prevented?
Education (e.g. safe sex, injecting) Immunisation with the HBV sAg vaccine Prevention of mother to child transmission
40
How is mother to child transmission of HBV prevented?
HBV vaccination given to the newborn in 6 doses immediately after birthHBV immunoglobulin if eAg positive Tenofeovir during last trimester if high viral load
41
Hepatitis D requires infection with what other virus in order to replicate?
Hepatitis B
42
Hepatitis D increases the risk of chronic liver disease. T/F?
True
43
How is hepatitis D infection managed?
Interferon only
44
How is hepatitis C transmitted?
Transfusion/transplant | vertical or sexual transmission is rare
45
There is a vaccine for hepatitis C. T/F?
False
46
What is the incubation period of hepatitis C?
6-7 weeks
47
HCV is usually symptomatic. T/F?
False - it is usually symptomatic
48
What does the presence of IgG for HCV indicate?
Chronic HCV infection or cleared infection
49
What tests are used to assess for current HCV infection?
PCR or antigen tests
50
How is HCV treated?
Direct acting antiviral which inhibit the replication cycle
51
For how long is DAA treatment used in HCV?
8-12 weeks
52
How are direct acting antivirals for HCV infection often dispensed?
From community pharmacies with daily methadone on an observed basis