ID - General Flashcards

1
Q

Cat scratch disease.

a) Infective organism
b) Symptoms
c) Treatment

A

a) Bartonella henselae
b) Brownish-red papules at site, local lymphadenopathy, fever, malaise
c) Azithromycin

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2
Q

Hepatitis.

a) Which two strains have vaccines?
b) Which is part of the 6 in 1 vaccine?

A

a) A and B

b) B

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3
Q

Lyme disease

a) Infective organism
b) Classic rash
c) Other features
d) Management

A

a) Borrelia burgdorferi
b) Erythema migrans
c) Joint inflammation, Carditis with AV block, CN VII palsy, meningitis, peripheral neuropathy

d) - Uncomplicated: doxycycline or amoxicillin oral (~ 28 days)
- Complicated: IV cef or benpen

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4
Q

Malaria sp.

a) Name the 5 species
b) Name the mosquito species
c) Which malaria species can cause recurrence years later due to dormant hypnozoites?

A

a) Falciparum, vivax, ovale, malariae and knowlesi
b) Anopheles
c) Vivax

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5
Q

Malaria.

a) Fever pattern
b) Investigation

A

a) Every 2-4 days

b) Blood film

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6
Q

Salmonella.

a) Species causing typhoid
b) Species causing gastroenteritis

A

a) typhi

b) enteritidis

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7
Q

Infectious diseases: taking a history

a) Epidemiological history
b) 5 common presenting complaints

A

a) Travel, vaccine and prophylaxis history, occupation, food/drink, recreational, sexual, animal contacts, special medical procedures, close contacts

b) Diarrhoea (E.coli, Salmonella, Campylobacter, viral),
RTI (Usually viral, Legionella), UTI, Skin/soft tissue infections (insect bites), Hepatitis (A)

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8
Q
ID epidemiology. 
Give the main tropical diseases found in these areas:
a) Central, east and west Africa
b) South Africa
c) South Asia/ southeast Asia
d) Latin America
A

a) Malaria, typhoid, schistosomiasis
b) Malaria, schistosomiasis
c) Malaria, dengue, typhoid, schistosomiasis, amoebiasis
d) Dengue, malaria (less falciparum)

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9
Q

Infections by occupation

a) Health Care Workers
b) Farm Workers
c) Sewage Workers
d) Sex Workers
e) Pet Shop owners
f) Abbatoir Workers

A

a) Blood borne Viruses, LRTIs, diarrhoea
b) Leptospirosis, Coxiella, Orf
c) Leptospirosis, Hepatitis A, Gastroenteritis
d) HIV, HepB, HSV, gonococcus, syphilis, chlamydia, etc
e) Psittacosis
f) Anthrax

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10
Q

Infections by sport

a) Canoeists
b) Cavers
c) Trekkers
d) Rugby Players
e) Swimmers

A

a) Leptospirosis, gastroenteritis
b) Histoplasmosis, Marburg
c) Lyme Disease, other Tick-borne diseases
d) HSV, fungal infections
e) Fungal infections, pox viruses, leptospirosis, gastroenteritis

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11
Q

Infections by risk factor

a) IVDU
b) Alcoholic
c) Cannabis

A

a) Hepatitis C, Hepatitis B, HIV, Endocarditis, Skin + Soft tissue infection including anthrax, aspergillus
b) TB, pneumonia, HIV
c) Pneumonia, early COPD, lung abscess

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12
Q

Infections by animal vector

a) Dogs
b) Cats
c) Rodents
d) Terrapins
e) Psittacine Birds
f) Tropical Fish
g) Wild and Domestic Fowl
h) Agricultural animals (city farms, etc.)

A

a) Campylobacter species, Toxocara, rabies
b) Toxoplasma, Bartonella, pasteurella
c) Leptospirosis (Weil’s disease), rat-bite fever, salmonella
d) Salmonella
e) Chlamydia psittaci
f) Mycobacterium marinum
g) Avian influenza
h) Coxiella spp, salmonella, E.coli (e.g. 0157)

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13
Q

Infections by PMHx

a) Head Injury
b) Cancer/immunosuppression
c) Splenectomy
d) Dentistry
e) Previous history of infectious disease (esp. meningitis)

A

a) Meningitis (especially pneumococcal)
b) CMV, VZV, PCP, neutropenic sepsis (bacteria, fungi)
c) Pneumococcal bacteraemia
d) Endocarditis
e) Pneumonia, cellulitis

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14
Q

Infections by iatrogenic cause

a) Blood Transfusions/Blood products
b) IV cannula
c) Prosthetic joints or heart valves
d) IUCD

A

a) HIV, HBV, HCV, malaria, prions
b) Skin and soft tissue sepsis (bacterial)
c) Serious persistent bacterial infections
d) Actinomycosis, toxic shock

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15
Q

Swabs for infection: colours

A
Blue = MRSA
Black = bacterial (BLACK-terial)
Green = viral
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16
Q

22 year old backpacker in Thailand, bitten by a mosquito and develops high fever. Also has a severe headache and pain behind the eyes, GI upset and systemically unwell.

A

a) Dengue fever

b)

17
Q

a)

A

a) Leishmaniasis

18
Q

Microbiology practical.

a) Beta-haemolytic
b) Alpha-haemolytic? - other test to do?

A

a) Strep pyogenes

b) Strep pneumoniae (optochin-sensitive), strep viridans (optochin-resistant)

19
Q

Helminth (worm)-related disease.

a) Common intestinal worm in children - presentation and management
b) Other intestinal worms - presentation and management
c) Worms that may cause IDA
d) Worm that may cause squamous cell bladder cancer? - other possible features?
e) Tracking serpiginous rash after walking barefoot on the beach

A

a) Threadworms
- Presentation: white threads in stool, perianal itching, waking at night, less commonly - weight loss
- Management: oral mebendazole, good hygiene (hand-washing before eating and after toileting), morning bath

b) Roundworms
- Presentation: usually asymptomatic; may cause systemic upset, fevers, SOB/wheeze, visible worms in stool, diarrhoea and vomiting, abdominal pain
- Management: mebendazole and hygiene measures

Tapeworms:

  • Rare in the UK
  • May cause intestinal symptoms
  • Treat with mebendazole

c) Hookworms
- Management: mebendazole and ferrous supplements

d) Schistosomiasis:
- Acute: GI upset
- Chronic: liver failure, renal failure, bladder Ca
- Ix: stool sample, urine sample
- Rx: praziquantel

e) Cutaneous larva migrans
- Usually roundworm/hookworm
- Rx: albendazole