Rheumatic Fever Flashcards
Explain rheumatic heart fever?
Acute
Inflammatory
Non communicable
What pathology is secondary only to streptococcal throat infection?
Rheumatic heart fever
Name a condition which is secondary to both streptococcal skin and throat infection?
Post-streptococal glomerulonephritis
Carriers of rheumatic heart fever are at low risk of 3%only.True or False
True
Name the criteria used for diagnosis of rheumatic heart fever?
Jones criteria
What is the most common age group to develop rheumatic heart fever
5-15 years
Jones Diagnostic criteria
2 major/ 1 major+2 minor
Name conditions that fall in major jones criteria
Polyarthritis Pan carditis Erythema marginatum Subcutaneous nodules Sydenhams chorea
What clinical features come under minor jones criteria
Polyarthralgia
Fever
What lab results are stated under minor criteria
Increased ESR
Increased CRP
Increased ASO titres
What ecg finding is stated under minor jones criteria?
Increased PR interval
What is the essential criteria for diagnosis of rheumatic heart fever?
Positive throat culture
Recent streptococcal infection
Recent scarlet fever
Positive ASO titres
What drug category is used in polyarthritis?
Salicylates
What joints are most commonly affected in polyarthritis?
Large joints WAKE Wrist Ankle Knee Elbow
Name the most common major symptoms of rheumatic heart fever
Polyarthritis
Name the most common major condition that causes death in rheumatic heart fever?
Pan carditis
What is the other name for pericarditis?
Bread and butter carditis
What are pathognomonic sign of myocarditis in pan carditis?
Aschoff bodies
What are the two types of endocarditis seen in pan carditis?
Valvular (shows aschoff bodies)
Mural (shows MC calum bodies and Aschoff bodies)
What are the 4 components of Aschoff bodies?
Primary T lymphocytes
Anthiscow cells (modified macrophages)
Giant cells
Plasma cells
Which major symptom of rheumatic heart fever never occurs isolated?
Subcutaneous nodules (occurs mostly. With carditis)
What are the size of subcutaneous nodules?
0.5 - 2cm
Subcutaneous nodules in rheumatic heart fever are painless.
True or false
True
Subcutaneous nodules occurs near bony prominences of ?
(VWOKE) Vertebrae Wrist Occiput Knee Elbow
Which is last manifestation to occur in rheumatic heart fever?
Sydenhams chorea
Sydenham’s chorea of pregnancy?
Chorea gravidarum
Precipitation factors of chorea?
Pregnancy
OCPs
Recurring streptococcus infection
How much time does patient generally take to recover from Sydenham’s chorea
6 months
Typical symptoms of chorea?
Milkmaids grip
Darting of protruded tongue
Pronator sign
Spooning of extended hand
Name 2 clinical condition in rheumatic heart fever that occur with carditis?
Subcutaneous nodules
Erythema marginatum
Erythema marginatum is on the face and is pruritic. True or false
False
What is modified jones diagnostics criteria?
- 2 major/1 major&2minor with increased ASO titres
- Recurrent rheumatic heart fever without established RHD
- Recurrent rheumatic heart fever with established RHD
- Rheumatic chorea
- valvular lesions (MS/MR/AR)
Most common affected valve in rheumatic heart fever?
Mitral valve(MAT P)
Aortic>tricuspid >pulmonary
Earliest valvular lesion in acute rheumatic fever?
Mitral regurgitation
Earliest valvular lesion in chronic rheumatic fever?
Mitral stenosis
Drug of choice in patients with polyarthritis,arthralagia,fever?
Aspirin, penicillin
What is drug dosage of aspirin in children
50-60 mg/kg/day to 80-100mg/kg/day
What is dosage of aspirin in adults?
4-8g/day
What is the possible toxicity of aspirin ?
Tinnitus
Nausea, vomiting
What drug is used if aspirin is not tolerated by the patient?
NSAID (naproxen)
What is dosage of napraxone used if aspirin is not tolerated?
10-20mg/kg/day
If patient is refractory to aspirin and nsaids then what can you give?
Corticosteroids (prednisone and prednisolones)
Route of administration for benzathine penicillin
IM
Dosage of benzathine penicillin?
1.2mn units
If patient <27 kgs then 6 lakh units
Oral preparation of penoxymethyl penicillin?
500mg/kg/day
250mg/kg/day (if <27kg of weight)
Patients who are allergic to penicillin are given which antibiotic drug?
Sulfadiazene, sulfisoxazole OR Erythromycin
If a patient with carditis lands up in congestive heart failure which drug will you give?
Glucocorticoids (prednisone)
In case of moderate to severe rheumatic chorea what drug will you prescribe?
Valproic acid or carbamazepine
Rest in very mild cases
Secondary prophylaxis regime in Rheumatic heart fever without carditis?
For 5 years or upto age of 21 years
Whichever is longer
Secondary prophylaxis regimen in rheumatic heart fever with carditis but no valvular lesion?
For 10 years or upto age of 21 years
Which ever is longer
Secondary prophylaxis regimen for rheumatic heart fever with carditis and residual valvular lesion?
For 10 years or upto age of 40 years
Which ever is longer