Infectious disease

Question 1

Glandular fever (soren throat, fatigue) + Amoxicillin (wrong treatment)

Answer 1

Maculopapular rash

Question 2

Antibiotic- if patient is dehydrated/infection is severe:
campylobacter jejuni (abdo tenderness and bloody diarrhoea)

Answer 2

Clarithromycin

Question 3

Antibiotic (if severe) for
Salmonella infection (abdo pain, diarrhoea, fever and rose spots)

Answer 3

Cefotazime

Question 4

Acute diverticultiis (LIF pain and fever)

Answer 4

Co-amoxiclav

Question 5

C.diff infections (watery diarrhoea post broad spec abx)

Answer 5

Metronidazole

Question 6

Antibiotic for legionella - note infected water

Answer 6

Clarithromycin (macolide - enters cell walls)
or tetracyclines

Question 7

Prosthetic joint infections - causative organism

Answer 7

Staph aureus
then coagulase negative staph

Question 8

Necrotising fascitis
Type 1 -
Type 2
most common affected site
mx

Answer 8

1 -most common, post-surg diabetics, anaerobes and aerobes
2 - strep pyogenes (GRAM +VE COCCI)
site - perineal (fournier’s gangrene)
mx - emergencyurgent debridement, iv abx

Question 9

Causative organism -
Lymes disease

Answer 9

borella burgdorferi

Question 10

Causative organism - ptyriasis rosea

Answer 10

HHV-7

Question 11

Causative organism -
Seb. dermatitis / cradle cap in kids

Answer 11

Malessezia furfur

Question 12

Causative organism -
impetigoll

Answer 12

staph aureus or strep pyogenes

Question 13

Cellulitis -
- affects which layers
- most common causative organism

Answer 13

deep dermis and subcutaneous tissues
strep pyogenes
then staph aures

Question 14

Cellulitis - Eron Classification
1 - no systemic features or comorbidity
2 - comorbidity affecting resolution of infection
3 - systemic features
4 - severe infection e.g. necrotising fascitis
- Admit if Eron Classes (?) for what treatment
- Other treatment

Answer 14

• Eron 3 and 4 - Admit, Oral/IV Co-amoxiclav (or Cefuroxime or Clindamycin)
• Otherwise - PO Flucloxacillin (2nd line Clarithromycin)

Question 15

Scalp ringworm (tinea capitis)
most frequent organism
causes

Answer 15

scalp alopecia (in ring)
trycophyton tonsurans

Question 16

meningitis
initial empiracy therapy <3 months

Answer 16

IV Cefotaxime and Amoxicillin

most common cause: GBS; also E.coli and Listeria

Question 17

meningitis
initial empiracy therapy >3 months, up to 50 yrs

Answer 17

IV Cefotaxime / Ceftriaxone

Question 18

meningitis
initial empiracy therapy >3 months >50 years

Answer 18

IV Cefotaxime and Amoxicillin - like babies !!
to cover strep pneumoniae and listeria as well as neissseria

Question 19

meningitis
meningococcal

Answer 19

IV Benzylpenicillin (or cefotaxmine)

Question 20

meningitis
pneumococcal / haem.influenzae
meningitis caused by Listeria

Answer 20

IV Cefotaxmine/Ceftrioxone
IV Amoxicillin + Gentamicin

Question 21

meninigits
management of contacts - households and close contacts

Answer 21

if had close contact 7 days before onset
Ciprofloxacin or Rifampicin
note for penumococcal menigitis no proph is generally needed

Question 22

Mycoplasma pneumonia

Answer 22

Ertythema multiforme (annular rash/target lesions on trunk)
Outbreaks amongst crowded areas eg students
requires mycoplasma serlogy

Question 23

Cryptosporidum
* type of microorganism
* presentation
* ix
* rf
* treatment
*

Answer 23

• Protozoa
• Watery diarrrhoea and cramps
• ziel neilsen stain - red cysts
• None, unless immunocompromised
• HIV