Hepatitis Flashcards

(53 cards)

1
Q

What is hepatitis?

A

Inflammation of the liver, often caused by viral infection or alcohol-related damage

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2
Q

What are common causes of hepatitis?

A

Viral infections, alcohol abuse, drugs, autoimmune diseases, and metabolic disorders

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3
Q

What causes alcoholic hepatitis?

A

Excessive alcohol consumption over time

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4
Q

What is NASH?

A

Non-alcoholic steatohepatitis, linked to obesity and diabetes

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5
Q

What is autoimmune hepatitis?

A

The immune system attacks liver cells mistakenly

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6
Q

What causes drug-induced hepatitis?

A

Medications like paracetamol or prolonged antibiotic use

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7
Q

What are common symptoms of viral hepatitis?

A

Abdominal pain, fatigue, flu-like illness, pruritus, muscle aches, nausea, vomiting, jaundice

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8
Q

How is hepatitis A transmitted?

A

Faecal-oral route via contaminated food or water

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9
Q

What virus family does hepatitis A belong to?

A

Picornavirus (naked RNA virus)

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10
Q

How is hepatitis A diagnosed?

A

IgM antibodies to hepatitis A

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11
Q

Is there a vaccine for hepatitis A?

A

Yes

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12
Q

What is the treatment for hepatitis A?

A

Supportive care; usually resolves on its own

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13
Q

What type of virus is hepatitis B?

A

Double-stranded DNA virus with reverse transcriptase activity

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14
Q

How is hepatitis B transmitted?

A

Blood and bodily fluids, including sexual contact and vertical transmission

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15
Q

What percentage of hepatitis B infections become chronic?

A

5–15%

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16
Q

What are key viral markers for hepatitis B?

A

HBsAg, HBeAg, HBcAb, HBsAb, HBV DNA

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17
Q

What does HBsAg indicate?

A

Active infection

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18
Q

What does HBsAb indicate?

A

Past infection or vaccination

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19
Q

What does HBeAg indicate?

A

High infectivity and active viral replication

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20
Q

What is the treatment for chronic hepatitis B?

A

Tenofovir disoproxil, adefovir dipivoxil, lamivudine

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21
Q

Is there a vaccine for hepatitis B?

A

Yes, given in 3 doses and part of the UK routine schedule

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22
Q

What type of virus is hepatitis C?

A

Enveloped positive-strand RNA virus (Flaviviridae family)

23
Q

How is hepatitis C transmitted?

A

Blood and bodily fluids

24
Q

Is there a vaccine for hepatitis C?

25
What percentage of hepatitis C infections become chronic?
About 75%
26
Why is chronic hepatitis C called a “silent” infection?
It may show no symptoms for decades
27
What can chronic hepatitis C lead to?
Cirrhosis and hepatocellular carcinoma
28
What is the cure rate for hepatitis C with treatment?
Over 90%
29
What are direct-acting antivirals (DAAs) used for?
To cure chronic hepatitis C
30
Name a pan-genotypic DAA combination
Sofosbuvir + velpatasvir
31
Which DAA is used for genotypes 1, 3, 4, 5, or 6?
Ledipasvir + sofosbuvir
32
Which DAA is used for genotypes 1 or 4?
Elbasvir + grazoprevir
33
What are alternative treatments if ribavirin is contraindicated?
Peginterferon alfa monotherapy
34
What is Hepatitis D?
The most serious form of hepatitis, causing liver failure, cancer, or death
35
What type of virus is Hepatitis D?
Negative-sense single-stranded RNA virus (Kolmioviridae family)
36
How is Hepatitis D transmitted?
Through blood and bodily fluids
37
Can Hepatitis D infect without Hepatitis B?
No, it requires Hepatitis B to propagate by attaching to HBsAg
38
What is co-infection in Hepatitis D?
Simultaneous infection with Hepatitis B and D
39
What is super-infection in Hepatitis D?
Hepatitis D infection after chronic Hepatitis B; often leads to chronic Hepatitis D
40
What percentage of super-infections become chronic?
Up to 90%
41
Where is Hepatitis D most common?
South America, Central Asia, Pacific Islands, and Russia
42
What percentage of chronic Hepatitis B patients are affected by Hepatitis D?
About 5%
43
What proportion of liver disease and cancer in HBV patients may be due to Hepatitis D?
Around 1 in 5 cases
44
What is the standard treatment for Hepatitis D?
Pegylated interferon alpha for at least 48 weeks
45
What is an alternative treatment for non-responders or those unsuitable for interferon?
Bulevirtide, if there is significant fibrosis
46
What type of virus is Hepatitis E?
Naked, non-enveloped RNA virus (Caliciviridae family)
47
How is Hepatitis E transmitted?
Faecal-oral route, usually via contaminated food or water
48
Where was Hepatitis E first reported?
Indian subcontinent
49
Where is Hepatitis E most common?
Asia, Middle East, Central/South America, Africa, Central Europe, and Russia
50
Is Hepatitis E common in the UK?
No, it is very rare
51
What is the typical course of Hepatitis E?
Mild illness that resolves within a month
52
Who is at risk of chronic Hepatitis E?
Immunocompromised patients
53
Is there a vaccine for Hepatitis E?
No