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Liver and Friends > Hepatitis > Flashcards

Hepatitis Flashcards

1
Q

What is hepatitis

A

inflammation of the liver

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2
Q

Difference between acute and chronic

A

acute- less than 6 months of onset
chronic- more than 6 months

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3
Q

presentation of acute hepatitis

A

general malaise
myalgia
gi upset
abdo pain
with or without cholestatic jaundice

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4
Q

causes of acute hepatitis

A

Infective
Viral = Hep A , Hep E , EBV

Non - viral
- leptospirosis

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5
Q

Chronic hepatitis presents as

A
  • +/- signs of chronic liver disease:
    • Clubbing
    • Palmar erythema
    • Dupuytren’s contracture (one or more fingers bending into palm of hand)
    • Spider naevi
  • LFTs e.g. AST and ALT can be normal
  • Compensated liver function can be maintained with cirrhosis
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6
Q

Define Hep A

A

The Hepatitis A virus is a non-enveloped single-stranded RNA virus.

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7
Q

How does Hep a spread

A
  • faeco - oral route
  • uncommon in uk
  • common in africa and south america
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8
Q

Is hep a acute or chronic

A

acute only

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9
Q

What do adults experience with Hep A

A
  • ## mild self - limiting manifesting with flu like symptoms
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10
Q

risk factors of Hep a

A

travel
sexually risky
haematological disorders
iv drug user

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11
Q

Pathophysiology of hep a

A
  • picornavirus
  • Replicates in the liver, is excreted in bile and then excreted in the faeces for about 2 weeks before the onset of clinical illness and for up to 7 days after
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12
Q

when is hep a most infectious

A

just before onset of jaundice

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13
Q

is there immunity after infection with hep a

A

yes 100%

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14
Q

describe the phases of Hep a

A
  1. Incubation:**Hepatitis A has a relatively long incubation period that may last from 2 - 6 weeks (mean 28-30 days).
  2. Prodromal: Early part of the disease, characterised by fever, joint pain and rash. Flu-like symptoms may be present
  3. Icteric:**In addition to jaundice, the icteric phase is characterised by anorexia, abdominal pain and change in bowel habit.
  4. Convalescent:**Recovery phase as the body returns to normal and symptoms subside. Symptoms like malaise may last months.
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15
Q

key presentation of hep a

A

mild illness with flu like symptoms and gi upset

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16
Q

hep a signs

A
  • Jaundice
  • RUQ tenderness
  • Hepatomegaly (85%)
  • Splenomegaly (15%)
  • Lymphadenopathy (5%)
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17
Q

symptoms in hep a

A
  • Abdominal discomfort
  • Nausea
  • Arthralgia
  • Anorexia
  • Diarrhoea
  • Flu-like illness
  • Pruritus
  • Dark urine, pale stool
  • Rash
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18
Q

1st line investigation in hep a

A
  • serology , HAV- igM positive soon after symptoms
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19
Q

Management of Hep a

A
  • supportive
  • oral hydration
  • nausea- metoclopramide
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20
Q

Define Hep b

A

It is an enveloped DNA virus that belongs to the Hepadnaviridae family and can cause acute or chronic hepatitis:

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21
Q

HBV genotype

A
  • It is a DNA virus that contains a nucleocapsid and outer envelope.
  • Its small DNA genome is contained within the nucleocapsid.
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22
Q

Pathophysiology of HBV

A
  • HBV enters hepatocytes
  • viral particle removes its outer envelope and forms covalenty closed circular dna
  • template for HBV protein
  • NORMAL VIRAL REPLICATION PROCECC
23
Q

How does acute HBV present

A
  • Subclinical - no symptoms
  • Anicteric - non specific illness and no jaundice
    • Malaise, anorexia, nausea, fever, right upper quadrant pain, vomiting, arthralgia, urticarial rash
  • Icteric - presents same as anicteric, with jaundice
  • Fulminant hepatitis failure - rare, presents with jaundice, confusion and coagulopathy
24
Q

how does chronic hbv present

A
  • Asymptomatic carrier state
  • Chronic hepatitis - wide range of symptoms depending on the severity of hepatitis and underlying liver impairment. May mimic acute hepatitis B symptoms.
  • Cirrhosis - hepatomegaly, splenomegaly, portal hypertension
  • Decompensated cirrhosis - ascites, encephalopathy, jaundice, coagulopathy and GI bleeding.
  • Extra-hepatic manifestations - polyarteritis nodosa (PAN), glomerulonephritis, mixed cryoglobulinaemia, papular acrodermatitis
25
Q

1st line investigation for HBV

A

Serology - antigens, antibodies and HBV DNA levels

26
Q

Management of acute infection

A
  • supportive
    -oral rehydration
  • education
27
Q

HBV chronic management

A
  • avoid alcohol
  • antiviral therapy
  • nucleotide analogies
  • pegylated interferon
28
Q

Define Hep c

A

Hepatitis C virus (HCV) is an infectious, hepatotropic virus belonging to the Flavivirus family. Infection may be acute and chronic.

29
Q

how is hep c spread

A
  • blood transfusions
  • iv drug userss
  • Mother-to-child
  • Sexual (MSM)
  • Tattoos, piercings, etc
30
Q

risk factors for hep c

A
  • Male
  • Older
  • Use of alcohol
  • HIV
  • HBV
31
Q

what type of virus IS HCV

A

RNA FLAVIVIRUS

32
Q

Acute HBC presentation

A
  • Most patients are asymptomatic
  • 10% have mild influenza-like illness with jaundice and a rise in serum aminotransferases (ALT and AST)
33
Q

chronic infection with hep c presents as

A

Signs of cirrhosis, liver failure and hepatocellular carcinoma

34
Q

1st line investigation for hep c

A

Serology - HCV antibody, HCV RNA (indicates current active infection, decreasing levels indicate recovery)

35
Q

management of hep c

A
  • Stop alcohol consumption
  • Acute HCV
    • If viral load is falling then no treatment may be required
  • combo of protease inhibitors with or without ribavirin is the treatment of choice
    • Monitor patient to confirm viral clearance
  • oral rivabarin + NS5A inhibitors + NS5B inhibitors
36
Q

complications with hep c

A
  • Glomerulonephritis
  • Cryoglobulinaemia - abnormal proteins in blood
  • Thyroiditis
  • Autoimmune hepatitis
  • Polyarteritis nodosa (PAN) - systemic necrotising inflammation of blood vessels
  • Polymyositis - inflammatory disease that causes muscle weakness affecting both sides of the body
  • Porphyria cutanea tarda - porphyrin build up in skin
37
Q

Define Hep D

A

Hepatitis D is caused by the defective hepatitis D RNA virus (delta virus) that needs hepatitis B for replication.

38
Q

Link between Hep B and Hep d

A

Hepatitis D virus (HDV) is a unique RNA virus that can only establish infection in the human liver with the help of Hepatitis Bvirus (HBV). HDV has an outer envelope that contains the HBV surface antigen (HBsAg). Therefore, it can only establish infection in HBsAg-positive patients.

39
Q

There are two key terms to recognise with HDV infection:….?

A
  • Coinfection: acute hepatitis D infection acquired at the same time of hepatitis B infection. Typically indistinguishable from acute hepatitis B alone.
  • Superinfection: development of acute hepatitis D infection in a patient with pre-existing hepatitis B infection. Usually more severe illness and higher risk of chronic infection (>90% of cases).
40
Q

how is hdv spread

A
  • sex
  • household contact
  • infected with hep b
41
Q

Hep d presents as

A
  • nausea
  • Vomiting
  • Anorexia
  • Malaise
  • Right upper quadrant pain
  • Fever
  • Jaundice
  • Cirrhosis
42
Q

Hep d investigations ?

A

Serology - hepatitis D and B serological markers and viral levels are important to distinguish between both acute and chronic infection, as well as coinfection and superinfection.

43
Q

WHAT IS THE MANAGEMENT FOR HEPATITIS

A

SUPPORTIVE

44
Q

Define Hep e

A

Hepatitis E is a small, non-enveloped RNA virus that can lead to acute and chronic hepatitis.

45
Q

most common cause of acute viral hep

A

Hep e

46
Q

how is hep e spread

A

faeco- oral

47
Q

what hepatitis is spread through the faeco oral route

A

a e

48
Q

what are the genotypes for hep e

A

HEV1
HEV2
HEV2
HEV4

49
Q

HOW IS hev 1-4 spread

A

HEV 1 AND 2= FAECO ORAL
HEV 3 AND 4 = zoonotic infections

50
Q

Acute hepatitis e manifestation

A
  • Jaundice
  • Fatigue
  • Nausea & vomiting
  • Abdominal pain
  • Pruritus
  • Flu-like illness
  • Hepatomegaly
51
Q

chronic hep e presentation

A
  • ommonly asymptomatic
  • Fatigue
  • Rarely jaundiced
52
Q

investigations for hep e

A
  • Serology - IgM shows active infection; IgG shows recovery
  • Presence of HEV RNA - detected using PCR. Due to viraemic window, this may be negative but a negative result doesn’t exclude HEV.
  • LFTs - elevated AST and ALT
53
Q

Management for hep e

A
  • supportive management

Liver and Friends (17 decks)

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