Microbio - others

Question 1

What will MRI brain show in cerebral abscess?

Answer 1

‘ring-enhancing’ lesion

Question 2

Which organism is Ix using Indian ink stain?

Answer 2

Cryptococcus neoformans

Question 3

Cryptococcus neoformans LP

Answer 3

High opening pressure (usually seen w HIV+ pts)

Question 4

Which organism can cause months of low-level systemic infection?

Answer 4

Streptococcus viridans

Question 5

Which organism presents as resp condition in immunocompromised and doesn’t respond to antibiotics nor antivirals?

Answer 5

Aspergillus fumigtus

Question 6

What does Aspergillus fumigatus Ix show?

Answer 6

CT interstitial changes and halo sign

Question 7

Where is H. Pylori found and what is its appearance on microscopy?

Answer 7

Stomach within mucosal layer, gram - flagellated.

Question 8

Which condition is caused by HHV8?

Answer 8

Kaposi’s sarcoma

Question 9

At what level of CD4 count is an HIV pt considered at increased risk of opportunistic infection?

Answer 9

< 200

Question 10

PC of HIV seroconversion illness

Answer 10

Fever, swollen LNs neck, malaise, diarrhoea, maculopap rash

Question 11

Which of these is particularly associated with longstanding bronchiectasis?

Answer 11

Pseudomonas Aeruginosa

Question 12

Which of these is most likely to CAUSE bronchiectasis?

Answer 12

Staph aureus

Question 13

What do + for the following Hb tests indicate?

1. sAg/HbsAg
2. cAb/Hbc
3. sAb/Hbs
4. Anti Hbc IgM
5. Anti Hbc IgG

Answer 13

1. Acute or chronic infection
2. Current infection, or immune due to previous infection
3. Immune due to previous infection or vaccination
4. Acute infx
5. Chronic infx

Question 14

Hepatitis A (virus) presentation

Answer 14

Jaundice, fever, malaise, loss of appetite, diarrhoea, nausea, abdominal discomfort, dark-coloured urine

Question 15

Antigenic drift

Answer 15

Mechanism which drives rapid change in influenza virus

Question 16

A patient with dark skin presents with dandruff and patches of depigmentation which appeared quite suddenly - usually their hair is impeccable. What is the most likely dx?

Answer 16

Pityriasis versicolour (fungus)

Question 17

A patient w diabetes who is non compliant with their glycaemic control agents presents with pain and redness around the eye. As they wait in A&E, they start to discharge black pus from their mouth and nose. What is the most likely dx?

Answer 17

Mucormycosis

Question 18

*Bacteria causing scarlet fever

Answer 18

Group A strep

Strep pyogenes

Question 19

*What virus increases risk of nasopharyngeal cancer?

Answer 19

EBV

Question 20

*Septic arthritis most common organism

Answer 20

Staph aureus

Question 21

*Q fever and endocarditis ix

Answer 21

Blood culture

Question 22

*EBV serology 2 weeks post infection

Answer 22

EBV IgM

Question 23

*Abx for pts w pseudomonas

Answer 23

Gentamicin

Question 24

*URTI syx + amox use -> rash, ix?

Answer 24

Monospot (thinking if glandular fever)