Diagnostic criteria for rheumatic heart disease
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Diagnostic Criteria for Rheumatic Heart Disease (RHD)
RHD is the chronic sequela of acute rheumatic fever (ARF), resulting in permanent valvular damage - most often mitral regurgitation, followed by mitral stenosis and aortic valve involvement. Diagnosis involves two complementary frameworks: the Revised Jones Criteria (for diagnosing the precipitating ARF episode) and the World Heart Federation (WHF) Echocardiographic Criteria (for diagnosing established or latent RHD).
1. Revised Jones Criteria (2015 AHA) for Acute Rheumatic Fever
There is no definitive single test for ARF. Diagnosis requires evidence of a preceding Group A streptococcal (GAS) infection PLUS fulfillment of the criteria below.
Evidence of GAS infection:
- Positive throat culture or rapid strep antigen test
- Elevated or rising anti-streptolysin O (ASO) titer or anti-DNase B titer
- Recent documented streptococcal pharyngitis
The 2015 revision stratifies criteria by population risk:
| Low-Risk Populations* | Moderate/High-Risk Populations | |
|---|---|---|
| Initial ARF | 2 major OR 1 major + 2 minor | 2 major OR 1 major + 2 minor |
| Recurrent ARF | 2 major OR 1 major + 2 minor OR 3 minor | 2 major OR 1 major + 2 minor OR 3 minor |
*Low risk = ARF incidence <2 per 100,000 school-aged children/year OR RHD prevalence ≤1 per 1,000 population/year
Major Criteria
| Criterion | Low-Risk Populations | Moderate/High-Risk Populations |
|---|---|---|
| Carditis | Clinical and/or subclinical (echocardiographic) valvulitis | Same |
| Arthritis | Polyarthritis only | Monoarthritis OR polyarthritis OR polyarthralgia |
| Chorea | Sydenham chorea | Same |
| Erythema marginatum | Present | Same |
| Subcutaneous nodules | Present | Same |
- Carditis - pancarditis with valvulitis as the most significant finding; echocardiography ("subclinical carditis") is now a valid major criterion
- Arthritis - typically migratory, large-joint polyarthritis, sterile with lymphocyte predominance; responds rapidly to NSAIDs
- Chorea (Sydenham chorea) - involuntary, non-rhythmic, purposeless movements; stops during sleep; predominates in females; can occur as a sole manifestation months after GAS infection
- Erythema marginatum - pink, blanching, serpiginous macules/papules on trunk and proximal limbs (almost never on face); evanescent
- Subcutaneous nodules - 0.5-2 cm, painless, over bony prominences or extensor tendons; appear 2-3 weeks after onset; associated with carditis
Minor Criteria
| Minor Criterion | Low-Risk Populations | Moderate/High-Risk Populations |
|---|---|---|
| Arthralgia | Polyarthralgia | Monoarthralgia |
| Fever | ≥38.5°C | ≥38.5°C |
| Elevated acute-phase reactants | ESR ≥60 mm/hr AND/OR CRP ≥3.0 mg/dL | ESR ≥30 mm/hr AND/OR CRP ≥3.0 mg/dL |
| Prolonged PR interval | Yes (unless carditis is a major criterion) | Same |
Key rule: When arthritis is already used as a major criterion, arthralgia cannot also be counted as a minor criterion. When carditis is a major criterion, a prolonged PR interval cannot be a minor criterion.
2. WHF Echocardiographic Criteria for Pathologic Valvular Regurgitation (Braunwald's Heart Disease)
Echocardiography is the key diagnostic tool. All four Doppler criteria must be met to define pathologic regurgitation:
Pathologic Mitral Regurgitation
- Seen in at least 2 views
- Jet length ≥2 cm in at least one view
- Peak velocity >3 m/sec
- Pansystolic jet in at least one envelope
Pathologic Aortic Regurgitation
- Seen in at least 2 views
- Jet length ≥1 cm in at least one view
- Peak velocity >3 m/sec
- Pandiastolic jet in at least one envelope
Morphologic Features (Valvular Changes)
| Acute Mitral Valve Changes | Aortic Valve Changes (Acute Carditis or Chronic RHD) |
|---|---|
| Annular dilatation | Irregular or focal leaflet thickening |
| Chordal elongation | Coaptation defect |
| Chordal rupture (flail leaflet with severe MR) | Restricted leaflet motion |
| Anterior (or posterior) leaflet tip prolapse | Leaflet prolapse |
| Beading/nodularity of leaflet tips | - |
3. WHF Echocardiographic Staging of RHD (2023 Guidelines - Harrison's 22E)
The 2023 WHF guidelines (Rwebembera et al., Nat Rev Cardiol 21:250, 2023) introduced a formal staging system, applicable in high-risk settings after excluding other causes:
| Stage | Age Applicability | Clinical Risk | Echocardiographic Features |
|---|---|---|---|
| A - Minimal | ≤20 years only | Might be at risk of progression | Mild MR or AR without morphologic features |
| B - Mild RHD | Any age | Moderate/high risk of progression | Mild regurgitation plus ≥1 morphologic feature (age ≤20 yrs) or ≥2 morphologic features (age >20 yrs); OR mild MR + mild AR in both valves |
| C - Advanced RHD | Any age | High risk of clinical complications | Moderate/severe MR or AR; any MS or AS; pulmonary hypertension; decreased LV systolic function |
| D - Advanced RHD with Complications | Any age | Requires medical/surgical intervention | Stage C features plus clinical complications (e.g., heart failure, AF, stroke) |
4. Valve Involvement Pattern
- Mitral valve: affected in nearly 100% of cases - MR most common, MS from progressive scarring (RHD is the most common cause of MS worldwide)
- Aortic valve: involved in 20-30% - AR more common than AS
- Tricuspid valve: histologic disease in 15-40%, rarely clinically significant
- Pulmonic valve: rarely involved
5. Supporting Investigations
| Test | Finding |
|---|---|
| ECG | Prolonged PR interval (first-degree AV block) |
| Throat culture / Rapid strep test | GAS identification |
| ASO titer / Anti-DNase B | Evidence of recent GAS infection |
| ESR, CRP | Elevated in active inflammation |
| CBC | Normochromic normocytic anemia, leukocytosis |
| Echocardiography | Valvular morphology, regurgitation severity, subclinical carditis |
Key Sources
- Goldman-Cecil Medicine, Table 269-3 (Jones Criteria, adapted from Gewitz et al., Circulation 2015)
- Braunwald's Heart Disease, Table 81.1 (WHF Minimum Echocardiographic Criteria)
- Harrison's Principles of Internal Medicine 22E (2025), Table 371-1 (WHF 2023 Staging; Rwebembera et al., Nat Rev Cardiol 2023)
- Recent meta-analysis on echocardiographic screening in latent RHD: Francia et al., Int J Cardiol 2024 (PMID 38428505)
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