Acute rheumatic fever Flashcards

1
Q

Causative at

A

Group A beta hemolytic streptococci

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2
Q

Most commin cause of heart disease in children of developing countries

A

RHD

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3
Q

HLA Class II alleles thar associated with susceptibility

A

HLA-DR7

HLA-DR4

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4
Q

Most common manifestations

A

Carditis

Polyarthritis

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5
Q

Latent Period from infecrion to SSx

If with Chorea and indolent carditis

A

3 weeks

6 months chorea indolent carditisC

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6
Q

Hallmark of rheumatic carditis

A

Valvular damage

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7
Q

Most comminlt affected valve

A

Mitral valvr

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8
Q

Character of joint. Involvement

A

Migratory
Adymmetric
Large joints

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9
Q

Sydenham’s chorea resovles in _ weeks

A

6

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10
Q

Pink macules that clear centrally leaving a serpinginous spreading edge
Usually on trunk sometimes limbs
Never on the face

A

Erythema marginatum

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11
Q

Painless small mobile lumps underlying skin over bony prominences particularly of hands, feet, elbows, occiput and occl vertebrae
Few days to 3 weeks
Delayed manifestation usually 2-3 weeks after onset of disease
Associated with caridtis

A

Subcutaneous nodes

Osler’s nodes are painful and in Infective Endocarditis

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12
Q

Titer for strep infection

A

Anti streptolysin O

Anti DNase B

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13
Q

JONES criteria

mAjor

A
Major JONES
Joints artheitos
O=❤️ Carditis 
n subcutaneous nodes
E erythema marginatum
Sydenham chorea
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14
Q

JONES MINOR

A

cafepal

CRP
Arthralgia 
Fever 
ESR 
Prolonged PR interval 
Previous fever or RHD
Leukocyte count
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15
Q

Ceiteria for those withour recurrent RHEUMATIC FEVER

A

2 major

OR

1 major, 2 minor + evidence of group A

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16
Q

Recurrent atrack of patient without RHD

A

2 major
OR
1 major + 2 minor
Evidence

17
Q

Recurrent attack of rheumatic fever in patient with RHD

A

2 minor

Evidence of GABHS

18
Q

Evidence of GABHS

A

Throat swab
Rapid antigen test for GAB
Recent scarlet fever
Anti strepltilysin O

19
Q

Antibiotics

A

Penicillin V 500mg BID PO 10 days
Amoxicillin 10 days
Single IM benzathine Pen G 1.2 M units

Alt erythromycin 250mg BID

20
Q

Aspirin dose

A

4-8g/day dicided into 4-5 doses for 2 weeks

Naproxen 10-20mg/kg as alternative

21
Q

CHorea refractory

A

IVIG

22
Q

Inflammatory markers normal after

A

4-6 weeks

23
Q

Repeat 2D echo when

A

1 month

24
Q

Repeat strep detection if initially negative

A

10-14 d

25
Q

Long term prophylaxis rheumatic fever eithout carditis

A

5 years from last attack or 21

26
Q

RF with carditis no VHD

A

10 years or up to 21

27
Q

RF eith persostent VHD

A

10 years or jntil 40 sometimes lifetime

28
Q

Valvular surgery

A

Lifetime

29
Q

Prophylaxis drugs

A

Benzathin Pen G 1M Q4 weeks 1.2MU
2/3weeks if high rosk

ORAL Pen V 250mg less effective

30
Q

Most widely accepted theroy is

A

Molecular mimicry

31
Q

Acute RF going to Rhd

A

60-%

32
Q

Polyarthritis

CSitis

A

50-60% carditis

50-75% PSA

33
Q

Latent period from infectious to appearance of clinical fratuees

A

3 weeks (1-5wks)

34
Q

How many persent of ARF proceed to RHD

A

60%