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MICROBIOLOGY > Strep > Flashcards

Strep Flashcards

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Biology 101 flashcards
1
Q

What virulence factor of S. pyogenes converts plasminogen to plasmin

A

Streptokinase
Fibrinolysin

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2
Q

What is used to document antecedent strep skin infection

A

Anti-DNAse B antibody

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3
Q

What streptococci possesses C5a peptidase as its virulence factor

A

Strep pyogenes

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4
Q

The structure of this protein is similar to the body’s proteins; causing molecular mimicry

A

M protein

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5
Q

Produces antibody to document antecedent strep throat infection

A

Streptolysin O

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6
Q

Toxin that causes necrotizing fasciitis

A

Exotoxin B

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7
Q

Color of skin lesion of impetigo contagiosa

A

Honey

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8
Q

Differnce bet erysipelas and cellulitis

A

Cellulitis is deeper

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9
Q

Clinical characteristics of scarlet fever

A

Strawberry tongue
Sandpaper like centrifugal rash
Pastia’s lines
Painful lymphadenopathy
Desquamation

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10
Q

Diagnosis of ARF

A

Throat culture or inc ASO titer + 2 major or 1 major and 2 minor

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11
Q

Characteristic of joint involvement in ARF (major criteria)

A

Migratory polyarthritis

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12
Q

What major criteria of ARF is standalone

A

Sydenham chorea

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13
Q

JONES

A

Joint involvement
Myocarditis
Subcu nodules
Erythema marginatum
Sydenham chorea

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14
Q

CAFE PAL

A

Inc CRP
Arthralgia
Fever
Inc ESR

Prolonged PR interval
Anamnesis of rheumatism
Leukocytosis

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15
Q

Pathophysio of PSGN

A

Immune complex deposition (M protein and Ag)

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16
Q

Post skin strep sequelae

A

PSGN

17
Q

Morphology of S. pneumoniae

A

Lancet shaped diplococcus

18
Q

What viridans strep causes dental caries

A

S. mutans

19
Q

What infection is associated with S. sanguis

A

Infective endocarditis

20
Q

Strep that is the cause of 60-70% of brain abscess

A

S. intermedius

21
Q

What type of endocarditis usually presents as toxic looking

A

Acute

22
Q

Causative agent of subacute endocarditis

A

Viridans strep

23
Q

Causative agent of marantic endocarditis

A

Strep bovis

24
Q
A

MICROBIOLOGY (5 decks)

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