Infections - Bacterial Flashcards

1
Q

Impetigo occurs in sites of scratching

A

True

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2
Q

Bullous impetigo often occurs in the neonatal period

A

True

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3
Q

If untreated, impetigo can leave scarring

A

False

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4
Q

Impetigo has been linked to a risk of rheumatic fever

A

False but need to screen for strep positive PSGN

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5
Q

Non bullous impetigo heals slower than bullous impetigo

A

False faster

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6
Q

Bullous impetigo mimics pemphigus vulgaris on histology

A

False - foliaceus

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7
Q

Impetigo of Brockhard refers to deep folliculitis

A

False superficial - 1-4mm pustules or crusted papules on an erythematous base

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8
Q

Blistering distal dactylitis can be caused by staph and gp B strep usually

A

False usually Gp A strep

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9
Q

Conditions caused by Gp A strep

A
IBEST
Impetigo
Blistering distal dactylitis
Ecthyma
Scarlet fever
TSS 
Perianal strep cellulitis
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10
Q

Criteria for diagnosis blastomycosis like Pyoderma

A

1 - clinical presentation of verrucous plaques and multiple pustules
2 - elevated border
3 - histological pseudoepitheliomatous hyperplasia with abscesses
4 - growth of >1 pathogenic specimen from tissue Bx specimen

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11
Q

Scarlet fever occurs between ages 1-4

A

False 1-10y

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12
Q

80% of the population has developed anti-SPE antibodies by the age of 10

A

True

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13
Q

Complications of scarlet fever

A
Otitis, 
Mastoiditis,
Sinusitis, 
Pneumonitis,
Myocarditis,
Meningitis,
Arthritis,
Hepatitis,
Acute glomerulonephritis
Rheumatic fever
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14
Q

Strep toxic shock syndrome is caused by Gp A and Gp G strep

A

True

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15
Q

Strep toxic shock syndrome is often due to a portal of entry caused by a disruption in skin barrier

A

True

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16
Q

Severe local pain is an uncommon symptom of strep toxic shock syndrome

A

False - most common initial symptom

17
Q

Gp A strep toxic shock is associated with late onset shock and organ failure

A

False early onset

18
Q

Which cytokines are released in strep toxic shock syndrome

A

TNF-a, IL-1 and IL-6

19
Q

Complications of strep toxic shock syndrome

A
Mortality 30-60%
DIC
ARDs
Renal failure 
NEC Fas
20
Q

Very young patients but not older individuals are at risk for erysipelas

A

False both

21
Q

Erypsipelas 50% blood cultures positive

22
Q

List infections with abscesses

A
Staph commonly causing folliculitis/furunculosis spectrum
Melioidosis 
Botryomycosis
Staph furunculosis 
Tuberculous gumma
Scrofuloderma
23
Q

Clostridium are spore forming gram negative rods

A

False gram positive

24
Q

Look for soft tissue crepitus with clostridium infection

25
Erythrasma predisposing factors include poor hygiene
True
26
Green black or green blue discolouration is due to PYOCYANIN , blue green pigment in p. Aeruginosa
True
27
Otitis externa is often cussed by p. Aeruginosa
True
28
Oculoglandular syndrome of Parinaud is caused by Bartonella henselae
True
29
Oculoglandular syndrome of Parinaud is a unilateral conjunctivitis and ipsilateral pre auricular LN =— occurs in 5% of individuals with cat scratch disease
True
30
Which infections have a Jarisch-Herxheimer type reaction?
Syphilis Bacillary angiomatosis Tulaeremia Tinea capitis can