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Acute Rheumatic fever and Rheumatic Heart disease

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Acute Rheumatic fever and Rheumatic Heart disease

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Acute Rheumatic fever and Rheumatic Heart disease: overview of pathophysiology, clinical manifestations, diagnosis and management

Acute Rheumatic fever and Rheumatic Heart disease: overview of pathophysiology, clinical manifestations, diagnosis and management

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Acute Rheumatic fever and Rheumatic Heart disease

  1. 1. Acute Rheumatic Fever and Rheumatic Heart Disease Jinja Regional Referral Children hospital / Nalufenya Continue Medical Education (CME) Prepared by Dr Gabriel K. Shamavu, Paediatrics Resident at KIU Dr Nambaziira Hajarah, Intern at JRRH Dr Naigaga Josephine, Intern at JRRH Robinah, Medical Student (BMS) at KIU
  2. 2. Case presentation • Demographics Name: NB Age: 8 years Sex: Female Level of Education: Primary 2 Religion: Anglican Tribe: Samya Address: Bugiri district Next of kin: MD, the father
  3. 3. Case presentation Referral from First line Medical center for ASOT titers, ECG, ECHO and pediatric cardiologist review. Presenting complain Palpitations for 1 month.
  4. 4. Case presentation • History of the presenting complaint NB is an 8 year old female, Ugandan by nationality, coming from a household with 8 family members and with a history of recurrent Upper Respiratory Tract Infections mainly experienced as sore throats, with the most previous one being 2 months ago, came in as a referral from First Line Medical Center for ASOT titers, ECG , ECHO and Pediatric cardiologist review. From the referring center, she was managed for Acute Rheumatic Fever and Severe malaria with hyperparasitemia on IV Ampiclox and IV Artesunate having presented with a 5 days history of migratory joint pains, high grade fevers and had (+++) on Blood Smear for malaria. While here, she in addition to the above reported a 1 month history of palpitations associated with easy fatigability but no history of difficulty in breathing, blue episodes, orthopnea or PND. Had not yet started oral antimalarial treatment.
  5. 5. Case presentation Review of systems RESPIRATORY and ENT: • No history of cough, hemoptysis, chest pain or difficulty in breathing • Reported no history of ear pains or discharge GUS • Reported normal micturition habits GIT • Had a reduced appetite, no dysphagia, no vomiting, no history of abdominal pains or abdominal distension, no diarrhea or constipation CNS • No history of headache, convulsions or loss of consciousness, no visual or hearing problems Skin • No history of skin rash
  6. 6. Case presentation • Past medical history This is the second admission to a health care facility, having been previously admitted and managed for severe malaria. Reported no known Chronic illnesses. No history of food or drug allergies. • Past Surgical history Has previously received blood transfusion due to severe malaria anemia, no history of any major surgeries done or involvement in major trauma • Developmental history She is reported to have attained all developmental milestones on time • Vaccination history Reported to have been fully vaccinated for age.
  7. 7. Case presentation On examination • Vital signs PR: 120beats/min, RR: 30cycles/min, Axillary temperature: 37.3degrees Celsius, SPO2; 96-98% on room air • General exam: She was a child of school going age, in a fair general condition, not in obvious respiratory distress, afebrile on touch. Had no pallor, no jaundice, no dehydration and no edema • CVS: Had warm peripheries, cap refill time was 2 seconds, tachycardic with a pulse rate 120 beats/min, regular, full volume, no radio-radial delay or radial femoral delays. No distended neck veins. She had a hyperactive precordium, apex beat 6th intercostal space MCL-AAL, heave in the mitral and tricuspid areas, Heart Sounds 1 and 2 heard with a pan systolic murmur, grade 4, blowing in character best heard in the mitral area and radiating to the axilla. Lung bases were clear
  8. 8. Case presentation On examination • Respiratory Was not in obvious respiratory distress, equal air entry bilaterally, breath sounds were vesicular in all lung fields. No added sounds • Per abdomen • It was of normal fullness, moving with respiration, soft, non tender with no palpable organomegalies. Bowel sounds were present. • CNS Was awake and alert, GCS 15/15. Pupils equal and reactive to light. Had normal tone, power and reflexes in all limbs.
  9. 9. Case presentation Impression 8 year old female with, • Rheumatic heart disease with Mitral regurgitation • Congenital heart disease • Heart failure with preserved ejection fraction (AHA class C. NYHA class II) • Resolving Malaria Differential diagnosis • Infective endocarditis • Juvenile idiopathic arthritis
  10. 10. Case presentation Investigations done and results • mRDT: Positive • BS for malaria.. (+++) and repeat BS for malaria (+) • Complete blood count. Hb: 10.3g/dl, WBC count: 15*10^3/ microliter Neutrophils: 7*10^9/ microliter, platelets: 300*10^3/microliter • Chest X-ray: • Cardiomegaly • Echocardiography • Severe Aortic regurgitation, Severe Mitral regurgitation, moderate tricuspid regurgitation and moderate pulmonary artery hypertension.
  11. 11. Case presentation Treatment • IV Lasix, 20mg once a day for 5 days • IV Ceftriaxone 1g once a day for 1 week • IM Benzathine Penicillin, 0.6 MU once every month • Tabs D-Artep 1.5 tablets once a day for 3 days. • Tabs Losartan 12.5mg once a day for 1 month • Tabs Spironolactone 6.25mg 12 hourly for 1 month • Tabs Ibuprofen 100mg 8hourly for 5 days. Definitive management • Double Valve replacement.
  12. 12. Acute Rheumatic Fever Jinja Regional Referral Children hospital / Nalufenya Continue Medical Education (CME) Prepared by Dr Gabriel K. Shamavu, Paediatrics Resident at KIU
  13. 13. Case presentation • Management and follow up plan Outline • Introduction • Pathophysiology • Clinical manifestations and Diagnosis • Treatment and Follow up
  14. 14. Introduction • The potential complications of group A (GAS) pharyngeal infection include both suppurative (eg, peritonsillar abscess, otitis media, sinusitis) and inflammatory, nonsuppurative conditions. • Acute rheumatic fever (ARF) is one of the nonsuppurative complications (others include scarlet fever and acute glomerulonephritis [AGN]).
  15. 15. Definition of ARF • ARF is a nonsuppurative sequela that occurs two to four weeks following group A beta hemolytic Streptococcus Streptococcus (GAS) pharyngitis • Characterized by an exudative and proliferative inflammatory lesion of the connective tissue, especially that of the heart, joints, blood vessels and subcutaneous tissue • May consist of arthritis, carditis, chorea, erythema marginatum, and subcutaneous nodules.
  16. 16. Complications of GAS infection Non-Suppurative Suppurative • Acute rhematic fever (ARF) • Post streptococcal reactive arthritis (PSRA) • Scalet fever • Streptococcal toxic shock syndrome • Acute glomerulonephritis • Pediatric autoimmune neuropsychiatric disorders associated with Streptococcus pyogenes (PANDAS) • Tonsilopharyngeal cellulitis or abscess • Otitis media • Sinusitis • Pneumonia • Skin and soft tissue infections: impetigo,pyoderma, cellulitis, vaginitis, Necrotizing fasciitis, … • Osteomyelitis
  17. 17. Epidemiology of ARF • Rheumatic fever and rheumatic heart disease are diseases of poverty and economic disadvantage. • In developing areas of the world, severe disease caused by group A Streptococcus (GAS; eg, ARF, rheumatic heart disease, glomerulonephritis, and invasive infections) is estimated to affect over 33 million people and is the leading cause of cardiovascular death during the first five decades of life. • ARF can occur at any age, although most cases occur in children 5 to 15 years of age.
  18. 18. Epidemiology of ARF • Worldwide, based upon conservative estimates, there are approximately 470,000 new cases of ARF and 275,000 deaths attributable to rheumatic heart disease each year • Most cases occur in low- and middle-income countries and among Indigenous groups. Regions with the highest rates are likely to have the least accurate data with substantial underreporting. • The mean incidence of ARF is 19 per 100,000 school-aged children worldwide, but it is lower (≤2 cases per 100,000 school-aged children) in the United States and other developed countries. • In many low- and middle-income countries and in certain Indigenous populations, such as those in Australia and New Zealand, the incidence of ARF is substantially higher, with some of the highest rates reported in Indigenous Australians at 153 to 380 cases per 100,000 children aged 5 to 14 years
  19. 19. Pathogenesis of ARF Cytotoxicity theory • Suggests that a GAS toxin is involved in the pathogenesis of acute rheumatic fever and rheumatic heart disease. • GAS produces a number of enzymes that are cytotoxic for mammalian cardiac cells, such as streptolysin O, which has a direct cytotoxic effect on mammalian cells in tissue culture. Most proponents of the cytotoxicity theory have focused on this enzyme. • However, a major problem with the cytotoxicity hypothesis is its inability to explain the substantial latent perid (usually 10-21 days) between GAS pharyngitis and onset of acute RF
  20. 20. Pathogenesis of ARF Immune-mediated pathogenesis • The antigenicity of several GAS cellular and extracellular epitopes and their immunologic cross- reactivity with cardiac antigenic epitopes also lends support to the hypothesis of molecular mimicry. Common epitopes are shared between certain GAS components (e.g., M protein, cell membrane, group A cell wall carbohydrate, capsular hyaluronate) and specific mammalian tissues (e.g., heart valve, sarcolemma, brain, joint). • For example, certain rheumatogenic M proteins (M1, M5, M6, and M19) share epitopes with human myocardial proteins such as tropomyosin and myosin
  21. 21. The major clinical manifestations of ARF are • Carditis and arthritis, • followed in descending frequency by chorea, subcutaneous nodules, and erhythema marginatum (uncommon but specific of ARF). Clinical manifestations and diagnosis of ARF
  22. 22. There are two primary forms of presentation for ARF: Acute febrile illness Neurologic/behavioral disorder Most common form (approximately 70 to 75 %) + joint manifestations and often carditis. The less common with Sydenham chorea. Joint manifestations are usually absent, and carditis, when present, is often subclinical. Clinical manifestations and diagnosis of ARF
  23. 23. Acute febrile illness (70 to 75%) Neurologic illness (25 to 30%) •Onset two to four weeks after GAS infection •Fever is common •Acute joint symptoms and signs •Carditis • Clinical and subclinical •Skin manifestations and subcutaneous nodules (both are rare) •Raised inflammatory markers •Evidence of preceding GAS infection (elevated ASO and anti-DNase B titers) •Dramatic symptomatic response to aspirin and NSAIDS •Duration usually <6 weeks •Followed by RHD in approximately 75% •Later onset • Two to six months after GAS infection •No fever •Joint manifestations are not a feature •Behavioral disorder and distinctive chorea •Carditis >30% • Often subclinical •Often normal inflammatory markers •ASO often unhelpful, anti-DNase B may be raised •Followed by RHD in approximately 50% Febrile illness versus Neurologic illness in ARF Clinical manifestations and diagnosis of ARF
  24. 24. Arthritis • Migratory Polyarthritis • in approximately 75% of patients with acute rheumatic fever and typically involves larger joints, particularly the knees, ankles, wrists, and elbows. • Involvement of the spine, small joints of the hands and feet, or hips is uncommon. • Rheumatic joints are classically hot, red, swollen, and exquisitely tender, with even the friction of bedclothes being uncomfortable • The pain can precede and can appear to be disproportionate to the objective findings. The joint involvement is characteristically migratory in nature; that is, a severely inflamed joint can become normal within 1-3 days without treatment, even as 1 or more other large joints become involved. Severe arthritis can persist for several weeks in untreated patients. Clinical manifestations and diagnosis of ARF
  25. 25. Arthritis • Monoarticular arthritis is unusual unless anti-inflammatory therapy is initiated prematurely, aborting the progression of the migratory polyarthritis. • Rheumatic arthritis is almost never deforming. Synovial fluid in acute RF usually has 10,000-100,000 white blood cells/µL with a predominance of neutrophils, protein level of approximately 4 g/dL, normal glucose level, and forms a good mucin clot. Frequently, arthritis is the earliest manifestation of acute RF and may correlate temporally with peak antistreptococcal antibody titers. • There is often an inverse relationship between the severity of arthritis and the severity of cardiac involvement. Clinical manifestations and diagnosis of ARF
  26. 26. Carditis (acute Rheumatic carditis, ARC) Clinical manifestations and diagnosis of ARF • A major change in the 2015 revision of the Jones Criteria is the acceptance of subclinical carditis (defined as without a murmur of valvulitis but with echocardiographic evidence of valvulitis) or clinical carditis (with a valvulitis murmur) as fulfilling the major criterion of carditis in all populations. • The carditis associated with ARF is classically considered to be a pancarditis that can involve the pericardium, epicardium, myocardium, and endocardium
  27. 27. Carditis (acute Rheumatic carditis, ARC) Clinical manifestations and diagnosis of ARF • The presence of valvulitis is established by auscultatory findings together with echocardiographic evidence of mitral or aortic regurgitation. • The Carey Coombs murmur, a short mid-diastolic murmur heard loudest at the apex, is an indicator of moderate-severe mitral regurgitation as a result of increased blood flow across the mitral valve during left ventricular filling. Subclinical carditis can be diagnosed by echocardiography/Doppler studies that reveal mitral or aortic regurgitation in the absence of ausculatory findings (either because the clinical exam findings are absent or are not recognized). • Damage to cardiac valves may be progressive and chronic Rheumatic Heart Disease (RHD), and may resulting in cardiac decompensation.
  28. 28. Chorea (Sydenham chorea) • occurs in approximately 10–15% of patients with acute RF and usually presents as an isolated, frequently subtle, movement disorder. • Emotional lability, incoordination, poor school performance, uncontrollable movements, and facial grimacing are characteristic, all exacerbated by stress and disappearing with sleep. • Chorea occasionally is unilateral (hemichorea). The latent period from acute GAS infection to chorea is usually substantially longer than for arthritis or carditis and can be months. Clinical manifestations and diagnosis of ARF
  29. 29. Onset can be insidious, with symptoms being present for several months before recognition. Clinical maneuvers to elicit features of chorea include • Demonstration of milkmaid’s grip (irregular contractions and relaxations of the muscles of the fingers while squeezing the examiner's fingers) • Spooning and pronation of the hands when the patient's arms are extended • Wormian darting movements of the tongue on protrusion, and • examination of handwriting to evaluate fine motor movements Clinical manifestations and diagnosis of ARF Chorea (Sydenham chorea)
  30. 30. Erythema Marginatum • Rare (approximately 1% of patients with acute RF) but characteristic rash of acute RF. • It consists of erythematous, serpiginous, macular lesions with pale centers that are not pruritic • It occurs primarily on the trunk and extremities, but not on the face, and it can be accentuated by warming the skin. Clinical manifestations and diagnosis of ARF
  31. 31. Subcutaneous Nodules • rare (≤1% of patients with acute RF) • consist of firm nodules approximately 0.5-1 cm in diameter along the extensor surfaces of tendons near bony prominences. • There is a correlation between the presence of these nodules and significant rheumatic heart disease. Clinical manifestations and diagnosis of ARF
  32. 32. Diagnosis of ARF Gewitz et al Revised Jones Criteria for Acute Rheumatic Fever, 2015 • The Jones criteria, used for guidance in the diagnosis of ARF since 1944, were last modified by the American Heart Association (AHA) in 1992. • They were reconfirmed in principle at an AHA-sponsored workshop in 20003 and historically have represented the clinical standard to establish the diagnosis of ARF. • In 2015 the American Heart Association (AHA) published the Revision of the Jones Criteria for the Diagnosis of Acute Rheumatic Fever in the Era of Doppler Echocardiography A Scientific Statement From the American Heart Association
  33. 33. Diagnosis of aARF, modified Jones criteria, 2015* Gewitz et al Revised Jones Criteria for Acute Rheumatic Fever, 2015 Circulation. 2015 | Volume 131, Issue 20: 1737–1738, originally publishedMay 19, 2015, https://doi.org/10.1161/CIR.0000000000000176
  34. 34. What is new in the 2015 Revised Jones Criteria? Gewitz et al Revised Jones Criteria for Acute Rheumatic Fever, 2015 Considering Epidemiologic implications; notion of LOW and HIGH-RISK individuals The global distribution of ARF and RHD is heterogeneous. certain geographic regions and specific ethnic and socioeconomic groups experience very high rates of ARF, whereas the disease has virtually disappeared in other regions.  It is reasonable to consider individuals at low risk of ARF if they come from a setting or population with known low rates of ARF and RHD  Where reliable epidemiological data are available, it is reasonable that low risk is defined as an ARF incidence <2 per 100,000 school-aged children (5-14 years old) per year, or an all-age prevalence of RHD of ≤1 per 1,000 population per year  Children not clearly from a low-risk population are at moderate to high risk depending on their reference population
  35. 35. What is new in the Revised Jones Criteria? Gewitz et al Revised Jones Criteria for Acute Rheumatic Fever, 2015 Carditis as major criteria can be “Clinical and/or “subclinically” diagnosed, in an era of widely available echocardiography:  Echocardiography with Doppler should be performed in all cases of confirmed and suspected ARF  It is reasonable to consider performing serial echocardiography/Doppler studies in any patient with diagnosed or suspected ARF, even if documented carditis is not present on diagnosis  Echocardiography/Doppler testing should be performed to assess whether carditis is present in the absence of auscultatory findings, particularly in moderate- to high-risk populations and when ARF is considered likely  Echocardiography/Doppler findings not consistent with carditis should exclude that diagnosis in patients with a heart murmur otherwise thought to indicate rheumatic carditis
  36. 36. What is new in the Revised Jones Criteria? Carditis as major criteria can be “Clinical and/or subclinically” diagnosed, in an era of widely available echocardiography: Numerous studies over the past 20 years have addressed the role of echocardiography (compared with purely clinical assessment) in the diagnosis of ARF. More than 25 studies have reported echocardiography/Doppler evidence of mitral or aortic valve regurgitation in patients with ARF despite the absence of classic auscultatory findings. Specific criteria exist for Doppler findings in subclinical rheumatic valvulitis: Mitral regurgitation Aortic regurgitation All four following criteria • Seen in ≥2 views • Jet length ≥2 cm • Peak velocity >3 m/s • Pansystolic All four following criteria • Seen in ≥2 views • Jet length ≥1 cm • Peak velocity >3 m/s • Pandiastolic
  37. 37. Investigations for ARF Evidence of preceding GAS infection The evidence of prior GAS infection may be sought in one of the following ways: • Positive throat culture for group A beta-hemolytic streptococci • Positive rapid streptococcal antigen test • Elevated or rising antistreptococcal antibody titer – Either antistreptolysin O (ASO) or antideoxyribonuclease B (ADB)
  38. 38. Investigations for ARF Laboratory studies obtained during the initial evaluation include • Measurement of CRP or ESR to seek evidence of systemic inflammation • Complete blood count with differential to look for anemia and leukocytosis Electrocardiogram and echocardiogram are performed as part of the initial screening
  39. 39. Differential diagnosis of ARF Differentials Rheumatic Arthritis Septic arthritis (including gonococcal) Connective tissue and other autoimmune diseases such as juvenile idiopathic arthritis Viral arthropathy Reactive arthropathy Lyme disease Sickle cell anemia Infective endocarditis Leukemia or lymphoma Gout and pseudo gout Poststreptococcal reactive arthritis Henoch-Schonlein purpura Acute Rheumatic Carditis Physiological mitral regurgitation Mitral valve prolapse Myxomatous mitral valve Fibroelastoma Congenital mitral valve disease Congenital aortic valve disease Infective endocarditis Cardiomyopathy Myocarditis, viral or idiopathic Kawasaki disease
  40. 40. Differential diagnosis of ARF Differentials Chorea Drug intoxication Wilson disease Tic disorder Choreoathetoid cerebral palsy Encephalitis Familial chorea (including Huntington disease) Intracranial tumor Lyme disease Metabolic (eg, Lesch-Nyhan, hyperalaninemia, ataxia telangiectasia) Antiphospholipid antibody syndrome Autoimmune: Systemic lupus erythematosus, systemic vasculitis Sarcoidosis Hyperthyroidism
  41. 41. Treatment of ARF Treatment of ARF consists of anti-inflammatory therapy, antibiotic therapy, and heart failure management Goals of treatment — The four major goals of treatment are: • Symptomatic relief of acute disease manifestations (eg, arthritis): corticosteroids • Eradication of group A beta-hemolytic Streptococcus (GAS): antimicrobial • Prophylaxis against future GAS infection to prevent progression of cardiac disease • Provision of education for the patient and patient’s caregivers There is no therapy that slows progression of valvular damage in the setting of ARF.
  42. 42. Treatment of ARF Drug Dosing in adults Penicillins (preferred) Penicillin V  500 mg orally two to three times daily for 10 days Amoxicillin*  500 mg orally twice daily for 10 days Penicillin G benzathine* (Bicillin L-A)  1.2 million units IM as a single dose Cephalosporins (potential alternatives for mild reactions to penicillinΔ) Cephalexin* (first generation)  500 mg orally twice daily for 10 days Cefuroxime* (second generation)  250 mg orally twice daily for 10 days Cefpodoxime* (third generation)  100 mg orally twice daily for 5 to 10 days Cefdinir* (third generation)  300 mg orally twice daily for 5 to 10 days or 600 mg orally once daily for 10 days Macrolides (alternatives) Azithromycin  500 mg orally on day 1 followed by 250 mg orally on days 2 through 5 Clarithromycin*  250 mg orally twice daily for 10 days Lincosamides (alternative when macrolide resistance is a concern and penicillins and cephalosporins cannot be used) Clindamycin  300 mg orally three times daily for 10 days Treatment of pharyngitis due to group A Streptococcus in adults
  43. 43. Rheumatic Heart Disease
  44. 44. Introduction to RHD • Rheumatic heart disease (RHD) remains a major cause of cardiovascular disease in wideworld. • While RHD occurs only as a sequela of acute rheumatic fever (ARF), the majority of patients with RHD lack a history of past ARF, suggesting that the diagnosis of ARF is frequently missed.
  45. 45. Definition of RHD RHD is defined as permanent heart valve damage subsequent to ARF. Note: RHD is different to Rheumatic carditis • Acute rheumatic carditis includes a spectrum of lesions ranging from pericarditis, myocarditis, and valvulitis during acute rheumatic fever (ARF); • There is a transition from rheumatic carditis to RHD with chronic valvular lesions that evolve over years following one or more episodes of ARF.
  46. 46. Pathophysiology of RHD • The valvular lesions begin as small verrucae composed of fibrin and blood cells along the borders of 1 or more of the heart valves. • As the inflammation subsides, the verrucae tend to disappear and leave scar tissue. • A single episode of acute rheumatic carditis often results in complete healing of the valvular lesions, while repeated episodes, especially involving previously affected valves, result in chronic RHD • With repeated attacks of ARF, new verrucae form near the previous ones, and the mural endocardium and chordae tendineae become involved. • The mitral valve is affected most often, followed in frequency by the aortic valve. • Isolated aortic valve disease is rare and generally seen with concomitant mitral valve involvement.
  47. 47. Patterns of valvular disease in RHD Rheumatic Mitral valve disease • Mitral stenosis • Mitral regurgitation OR insufficiency • Mixed mitral stenosis/regurgitation Rheumatic Aortic valve disease • Aortic stenosis • Aortic regurgitation • Tricuspid valve disease • Pulmonary valve disease
  48. 48. Patterns of valvular disease in RHD • Among patients with acute rheumatic carditis (ARC), the intensity and time course of the inflammatory process may impact the course of mitral valve disease. • Severe inflammation of the chordal structures and mitral valve leaflets can lead to isolated MR, seen predominantly in children and young adults. • Moderate chordal and leaflet inflammation, which may be exacerbated by repeated ARC, may lead to mixed MR and mitral stenosis (MR+MS). • Chronic chordal and leaflet inflammation may be exacerbated by repeated acute rheumatic carditis, which may lead to mitral stenosis (MS) See algorithm on next slide Rheumatic Mitral valve disease
  49. 49. Patterns of valvular disease in RHD Pathogenesis Rheumatic Mitral valve disease ARC: acute rheumatic carditis; MV: mitral valve MS: mitral stenosis MR: mitral regurgitation.
  50. 50. Patterns of valvular disease in RHD Mitral regurgitation • RHD related mitral valve structural changes include some loss of valvular substance and/or changes to the subvalvular apparatus (elongation of the chordae) • During ARF with severe cardiac involvement, heart failure is caused by a combination of mitral insufficiency coupled with a pancarditis , involving the pericardium and myocardium in addition to the endocardium/valve. • Because of the increased volume load from the mitral insufficiency and the inflammatory process, the left ventricle dilates. The left atrium also enlarges to accommodate the regurgitant volume. Increased left atrial pressure results in pulmonary congestion and symptoms of left-sided heart failure.
  51. 51. Patterns of valvular disease in RHD Mitral regurgitation RHD related mitral valve structural changes include loss of valvular substance and/or changes to the subvalvular apparatus (elongation of the chordae) The mitral valve becomes no longer able to close properly during the systole (insufficiency) Mitral regurgitation Increased Left Atrial pressure Pulmonary congestion Left-sided Heart failure Chronic MR+MS MR+MS Other complications : the onset of atrial fibrillation (AF) or other arrhythmias, or infective endocarditis. rheumatic process, recurrent episodes of ARF
  52. 52. Patterns of valvular disease in RHD Mitral regurgitation Chest x ray This plain chest radiograph from a female with known mitral regurgitation demonstrates cardiomegaly with left atrial (arrow) and left ventricular enlargement (arrowhead), as well as mild pulmonary venous redistribution, all features characteristic of mitral regurgitation.
  53. 53. Patterns of valvular disease in RHD Mitral regurgitation Mild MR Severe MR Clinical manifestation signs of heart failure are not present, the precordium is quiet, and auscultation reveals a high-pitched holosystolic murmur at the apex that radiates to the axilla • Enlarged heart with heaving apical left ventricular (LV) impulse and often an apical systolic thrill • Accentuated S2 if pulmonary hypertension is present • A third heart sound or gallop is generally prominent • Severe signs of Heart failure ECG Normal • Prominent, longer duration and often bifid P waves, signs of LV hypertrophy, and associated right ventricular (RV) hypertrophy if pulmonary hypertension is present. Chest X Ray Normal • Prominence of the left atrium and ventricle • Congestion of the perihilar vessels, a sign of pulmonary venous hypertension
  54. 54. Patterns of valvular disease in RHD Mitral regurgitation Apical four chamber view with color flow Doppler shows severe mitral regurgitation during systole associated with marked enlargement of the left ventricle and left atrium. Echocardiography apical four chamber view of mitral regurgitation Chronic mitral insufficiency (regurgitation) from RHD is characterized on echocardiography by leaflet and chordal thickening, chordal fusion, and restricted leaflet motion. These changes often lead to stenosis
  55. 55. Patterns of valvular disease in RHD Mitral stenosis • Nearly all cases of MS are caused by RHD • Mitral stenosis of rheumatic origin results from fibrosis of the mitral ring, commissural adhesions, and contracture of the valve leaflets, chordae, and papillary muscles over time • MS causes an obstruction to blood flow from the left atrium to left ventricle. As a result, there is an increase in pressure within the left atrium, pulmonary vasculature, and right side of the heart, while the left ventricle is unaffected in isolated MS. • This is a chronic process and often takes ≥10 yr for the lesion to become fully established, although the process may occasionally be accelerated
  56. 56. Patterns of valvular disease in RHD Mitral stenosis Clinical manifestations • Related to the severity of the valvular stenosis, as it impacts the left atrial pressure, pulmonary pressures, pulmonary vascular resistance, and cardiac output. • MS usually presents with exertional dyspnea and/or decreased exercise tolerance • Less common clinical presentations include hemoptysis, chest pain (often due to pulmonary hypertension), fatigue, ascites and lower extremity edema associated with right heart failure…
  57. 57. Patterns of valvular disease in RHD Mitral stenosis Mild MS Severe MS Clinical manifestation • Asymptomatic • Exercise intolerance and dyspnea • Normal heart size • Dyspnea • Hemoptysis • Atrial fibrillation and other atrial arrhythmias • Thromboembolism • Chest pain • Right-sided heart failure • Moderate cardiomegaly • loud S1, an opening snap of the mitral valve, and a long, low-pitched, rumbling mitral diastolic murmur with presystolic accentuation at the apex ECG Normal • prominent and notched P waves and varying degrees of RV hypertrophy become evident. • Atrial arrhythmias are common late manifestations. Chest X Ray Normal • redistribution of pulmonary blood flow so that the apices of the lung have greater perfusion (the reverse of normal)
  58. 58. Patterns of valvular disease in RHD Echocardiogram • Echocardiography demonstrates thickening of the mitral valve and chordal apparatus, as well as restricted motion of the valve. • The typical “elbow” or “dog leg” appearance of the anterior leaflet of the mitral valve can aid in the distinction of a rheumatic valve from the various forms of congenital mitral stenosis • Left atrial dilation is common; color Doppler flow across the mitral valve shows a narrow jet with flow acceleration, and variable degrees of tricuspid insufficiency can be seen from left atrial hypertension Mitral stenosis
  59. 59. Patterns of valvular disease in RHD Apical long axis view from a 2-D echocardiogram shows: • Thickened mitral valve leaflets which have marked limitation of mobility • and show doming, with failure to open normally during diastole. Play the video Mitral stenosis
  60. 60. Patterns of valvular disease in RHD Four chamber echocardiogram shows thickened mitral valve with reduced motion and doming during diastole. Right and left atrial enlargement are also present. Mitral stenosis Play the video
  61. 61. Patterns of valvular disease in RHD A real-time, three-dimensional TEE image in a long-axis orientation shows the thickened mitral leaflet with commissural fusion and diastolic doming, typical for rheumatic mitral valve disease. LA: left atrium; Ao: aorta; LV: left ventricle; TEE: transesophageal echocardiogram. Play the video Mitral stenosis
  62. 62. Patterns of valvular disease in RHD On transesophageal echocardiogram (TEE) imaging, a full volume acquisition of the mitral valve in a patient with rheumatic mitral stenosis shows the typical commissural fusion with a small oval central orifice in diastole. Images are shown from the perspective of the left atrial side of the valve and from the left ventricular side of the valve. Play the video Mitral stenosis
  63. 63. Patterns of valvular disease in RHD Aortic regurgitation / insufficiency • In acute rheumatic aortic insufficiency, poor coaptation of the leaflets or leaflet prolapse is seen. Chronic rheumatic aortic insufficiency leads to sclerosis of the valve and results in distortion and retraction of the cusps. • In both settings, regurgitation of blood leads to LV volume overload with dilation and hypertrophy of the left ventricle, as it attempts to compensate for the excessive volume load. Combined mitral and aortic insufficiency in the acute phase of ARF is much more common than aortic involvement alone.
  64. 64. Patterns of valvular disease in RHD Aortic regurgitation / insufficiency Symptoms are unusual except in severe aortic insufficiency, or in the presence of significant concomitant mitral valve involvement or myocardial dysfunction: • Dyspnea on exertion can progress to orthopnea and pulmonary edema; angina • Nocturnal attacks with sweating, tachycardia, chest pain, and hypertension may occur
  65. 65. Patterns of valvular disease in RHD Aortic regurgitation / insufficiency Peripheral signs
  66. 66. Patterns of valvular disease in RHD Aortic regurgitation / insufficiency • Corrigan’s pulse or water-hammer sign (collapsing pulse) • De Musset’s sign: Bobbing of the head with each heartbeat (like a bird walking) • Muller’s sign: Visible pulsations of the uvula • Quincke’s sign: Capillary pulsations seen on light compression of the nail bed • Traube’s sign: Systolic and diastolic sounds heard over the femoral artery (“pistol shots”) • Duroziez’s sign: Gradual pressure over the femoral artery leads to a systolic and diastolic bruit • Hill’s sign: Popliteal systolic blood pressure exceeding brachial systolic blood pressure by ≥ 60 mmHg (most sensitive sign for aortic regurgitation) • Shelly’s sign: Pulsation of the cervix • Rosenbach’s sign: Hepatic pulsations • Becker’s sign: Visible pulsation of the retinal arterioles • Gerhardt’s sign (aka Sailer’s sign): Pulsation of the spleen in the presence of splenomegaly • Mayne’s sign: A decrease in diastolic blood pressure of 15 mmHg when the arm is held above the head (very non-specific) • Landolfi’s sign: Systolic contraction and diastolic dilation of the pupil Peripheral signs of severe Aortic Regurgitation
  67. 67. Patterns of valvular disease in RHD Aortic regurgitation / insufficiency Echocardiography shows a dilated left ventricle and diastolic mitral valve flutter or oscillations caused by aortic regurgitant flow hitting the valve leaflets. The aortic valve may demonstrate irregular or focal thickening, decreased systolic excursion, a coaptation defect, and leaflet prolapse. Five chamber view from a 2-D echocardiogram shows a moderate amount of aortic regurgitation and left ventricular enlargement. Play the video
  68. 68. Patterns of valvular disease in RHD Aortic regurgitation / insufficiency Chest X Ray and EEG • Chest radiographs demonstrate enlargement of the left ventricle and aorta • ECG may be normal, but in advanced cases it reveals signs of LV hypertrophy with a strain pattern and prominent P waves.
  69. 69. Patterns of valvular disease in RHD Aortic stenosis • Isolated rheumatic AS is very rarely seen • AS generally progresses gradually over years with a prolonged asymptomatic phase, although the clinical course is variable. Mortality dramatically increases after the development of symptoms. • Average survival without valve replacement after the onset of angina, syncope, or HF is only two to three years.
  70. 70. Patterns of valvular disease in RHD Tricuspid valve disease • Primary tricuspid valve involvement is rare during both the acute and chronic stages of rheumatic fever. • Is more common secondary to Right ventricule dilation, resulting from significant left- sided cardiac lesions. • The clinical signs of tricuspid insufficiency include prominent pulsations of the jugular veins, systolic pulsations of the liver, and a blowing holosystolic murmur at the lower left sternal border that increases in intensity during inspiration
  71. 71. Patterns of valvular disease in RHD Pulmonary Valve Disease • Pulmonary insufficiency secondary to ARF is rare and usually occurs on a functional basis secondary to pulmonary hypertension and is a late finding with severe mitral stenosis. • The murmur (Graham Steell murmur ) is similar to that of aortic insufficiency, but peripheral arterial signs (bounding pulses) are absent. • The correct diagnosis is confirmed by two-dimensional echocardiography and Doppler studies
  72. 72. Primary prevention • Prevention of the initial development of acute rheumatic fever (ARF) involves prompt diagnosis and antibiotic treatment of group A streptococcal (GAS) tonsillopharyngitis • Appropriate antibiotic treatment of streptococcal pharyngitis prevents ARF in most cases. • However, at least one-third of ARF episodes occur in the setting of subclinical streptococcal infection. • In addition, ARF is not preventable in symptomatic patients who do not seek medical care. Management of RHD
  73. 73. How to classify the risk of GAS and guide management of acute pharyngitis Estimates probability that pharyngitis is streptococcal, and suggests management course. Remember : All Pharyngitis is not due to GAS (avoid irrational use of antibiotics) But don’t miss to treat adequately a real GAS infection
  74. 74. Management of RHD Secondary prevention • Patients who have had an attack of ARF and develop subsequent GAS pharyngitis are at high risk for a recurrent attack of ARF. Rheumatic heart disease (RHD) becomes more severe with each recurrent episode. • Antimicrobial prophylaxis recommend continuous • Parenteral prophylaxis with penicillin G benzathine is preferred for all patients. Oral agents are used in the case of shortages of penicillin G benzathine and are also appropriate for patients who are allergic to penicillin. • During the course of prophylaxis, patients and their household contacts who develop acute episodes of GAS pharyngitis should be evaluated and treated promptly. Patients with breakthrough GAS pharyngitis on penicillin should be treated with an alternative agent such as clindamycin. • Education and counselling of the patient is very important to ensure a good adherence to the prophylactic therapy
  75. 75. Management of RHD Secondary prophylaxis for rheumatic fever - Selection of therapy Continuous regimen Adults >27 kg Children ≤27 kg Penicillin G benzathine intramuscular (Bicillin LA, benzathine benzylpenicillin) 1.2 million units every 21 to 28 days* 600,000 units every 21 to 28 days* Penicillin V oral 250 mg orally twice daily 250 mg orally twice daily Allergy to penicillin and sulfonamide antimicrobials: Azithromycin¶ 250 mg orally once daily 5 mg/kg orally once daily (up to 250 mg) Erythromycin is an acceptable alternative to azithromycin, although the latter has fewer adverse effects and permits once daily dosing. Erythromycin dosing for adults: 250 mg (base) orally twice daily. Dosing for children: 20 mg/kg/day divided twice daily (maximum 500 mg per day).
  76. 76. Management of RHD Duration of Secondary prophylaxis for rheumatic fever Category Duration after last attack Rheumatic fever with carditis and residual heart disease (persistent valvular disease*) 10 years or until 40 years of age (whichever is longer) Sometimes lifelong prophylaxis (refer to UpToDate topics on treatment and prevention of acute rheumatic fever and management and prevention of rheumatic heart disease) Rheumatic fever with carditis but no residual heart disease (no valvular disease*) 10 years or until 21 years of age (whichever is longer) Rheumatic fever without carditis 5 years or until 21 years of age (whichever is longer) * Clinical or echocardiographic evidence.
  77. 77. Management of RHD General management of RHD • Patients with rheumatic valve disease should undergo periodic clinical and echocardiographic evaluation with frequency based upon the severity of disease • As noted above, secondary prevention (Continuous antibiotic prphylaxis) of rheumatic fever is recommended in patients with history of acute rheumatic fever (ARF) and/or RHD • Annual influenza vaccination and meticulous dental hygiene with annual check-ups are recommended for patients with RHD. • Prophylaxis against infective endocarditis (IE) is recommended for patients with prosthetic heart valves or a previous history of IE who undergo invasive dental procedures
  78. 78. Management of RHD Management of mitral regurgitation • Prophylaxis against recurrences • Afterload-reducing agents— ACE inhibitors and ARBs may reduce the regurgitant volume, attenuate pathologic compensatory mechanisms, and preserve left ventricular function, but these have not been proven to alter the natural history of the disease process. • Diuretics may also provide some symptomatic and clinical benefit in select cases • Treatment of complications : heart failure , arrhythmias, and infective endocarditis, … • Surgical treatment (annuloplasty, valve remplacement,…) is indicated for patients who, despite adequate medical therapy, have persistent heart failure, dyspnea with moderate activity, and progressive cardiomegaly, often with pulmonary hypertension
  79. 79. Management of RHD Management of mitral stenosis • Prophylaxis against recurrences • Pharmacologic therapy (diuretics and β-blockers) can be considered but is generally used only for symptom control and much less often in children. • Intervention is indicated in patients with clinical signs and hemodynamic evidence of severe obstruction, but before the onset of severe manifestations. • Percutaneous or Surgical valvotomy, or balloon catheter mitral valvuloplasty generally yields good results; valve replacement is usually not necessary.
  80. 80. Management of RHD Management of aortic regurgitation/ insuffiency • Treatment consists of ACE inhibitors or ARBs and prophylaxis against ARF recurrence. • Surgical intervention, which is typically aortic valve replacement, but occasionally can involve aortic valve repair, should be done well in advance of the onset of heart failure, pulmonary edema, and angina or when signs of decreasing myocardial performance become evident
  81. 81. Management of RHD Management of aortic stenosis • Medical management of asymptomatic aortic stenosis includes serial evaluation, treatment of associated cardiovascular disease, and limitation of physical activity, as appropriate. • No medical therapies have been proven to delay progression of leaflet disease. • Symptomatic aortic stenosis is an indication for aortic valve replacement. Surgery or transcatheter aortic valve implantation in such patients is associated with marked reduction in symptoms and mortality. • palliative care is recommended for patients with severe symptomatic aortic stenosis who are not candidates for surgery or transcatheter aortic valve implantation.
  82. 82. Management of RHD Management of aortic stenosis • Medical management of asymptomatic aortic stenosis includes serial evaluation, treatment of associated cardiovascular disease, and limitation of physical activity, as appropriate. • No medical therapies have been proven to delay progression of leaflet disease. • Symptomatic aortic stenosis is an indication for aortic valve replacement. Surgery or transcatheter aortic valve implantation in such patients is associated with marked reduction in symptoms and mortality. • palliative care is recommended for patients with severe symptomatic aortic stenosis who are not candidates for surgery or transcatheter aortic valve implantation.
  83. 83. Conclusion and Message to take home • ARF and RHD are serious conditions that can cause significant damage to the heart and other vital organs. • Middle and lower income countries are particularly affected by these conditions, facing challenges such as limited access to healthcare and poor living conditions • Despite these challenges, Proper prevention and treatment can help prevent the development and progression of these conditions • It’s essential to prioritize resources and efforts towards improving living conditions, providing appropriate treatment for streptococcal infections to reduce the burden of these debilitating conditions
  84. 84. Society guideline links International • World Heart Federation (WHF): Position statement on the prevention and control of rheumatic heart disease (2013) United States • American Heart Association (AHA): Scientific statement on the revision of the Jones criteria for the diagnosis of acute rheumatic fever in the era of Doppler echocardiography (2015) • AHA: Scientific statement on prevention of rheumatic fever and diagnosis and treatment of acute streptococcal pharyngitis (2009) • American Academy of Family Physicians (AAFP): Evaluation of poststreptococcal illness (2005) Europe • European Society of Cardiology (ESC) and European Association for Cardio-Thoracic Surgery (EACTS): Guidelines on the management of valvular heart disease (2012) Australia • Heart Foundation of New Zealand and the Cardiac Society of Australia and New Zealand (CSANZ): New Zealand guidelines for rheumatic fever – Diagnosis, management and secondary prevention of acute rheumatic fever and rheumatic heart disease, update (2014) • Heart Foundation of New Zealand and CSANZ: New Zealand guidelines for rheumatic fever – Group A streptococcal sore throat management guideline, update (2014) • Heart Foundation of New Zealand and CSANZ: New Zealand guidelines for rheumatic fever – Proposed rheumatic fever primary prevention programme, update (2014) • Rheumatic Heart Disease (RHD) Australia and National Heart Foundation of Australia and CSANZ: The Australian guideline for prevention, diagnosis and management of acute rheumatic fever and rheumatic heart disease, 2nd edition (2012)
  85. 85. References • ROBERT M. KLIENGMAN, at al. Nelson textbook of Pediatrics, 21st edition, Elsevier, 2020 • GEWITZ MH, BALTIMORE RS, TANI LY, et al. Revision of the Jones Criteria for the diagnosis of acute rheumatic fever in the era of Doppler echocardiography: a scientific statement from the American Heart Association. Circulation 2015; 131:1806.
  86. 86. Thank you for your attention

Editor's Notes

  • There is a latent period of two to three weeks following the initial pharyngitis before the first signs or symptoms of ARF appear. The disease presents with various manifestations that may include arthritis or arthralgia, carditis, chorea, subcutaneous nodules, and erythema marginatum
  • Revised

  • GAS: group A Streptococcus; ASO: antistreptolysin; NSAID: nonsteroidal anti-inflammatory drug; anti-DNase B: antideoxyribonuclease B; RHD: rheumatic heart disease.
  • Diagnosis is based on clinical findings with supportive evidence of GAS antibodies. However, in the usual patient with a long latent period from the inciting streptococcal infection to onset of chorea, antibody levels have often declined to normal. Although the acute illness is distressing, chorea rarely if ever leads to permanent neurologic sequelae.
  • Revised
  • Revised
  • Numerous studies over the past 20 years have addressed the role of echocardiography (compared with purely clinical assessment) in the diagnosis of ARF. More than 25 studies have reported echocardiography/Doppler evidence of mitral or aortic valve regurgitation in patients with ARF despite the absence of classic auscultatory findings.
  • Revised
  • the initial inflammatory response following the first episode of ARC determines the degree and extent of structural involvement of the MV apparatus. Severe inflammation of the chordal structures and MV leaflets often lead to severe MR in the very young, whereas moderate inflammation followed by repeated bouts of ARC is more likely to cause mixed MV disease (MR and MS) later in life. Isolated MS is usually the consequence of milder or even subclinical forms of ARC followed by episodes of recurrent carditis. In developing countries where the risk of recurrent ARC is high, MS presents at a younger age and the valve leaflets are more likely to be pliable and not calcified. In Western societies where the risk of recurrent ARC is low, MS presents later in life, and the MV leaflets are more likely to be rigid and calcified.
  • During ARF with severe cardiac involvement, heart failure is caused by a combination of mitral insufficiency coupled with a pancarditis , involving the pericardium and myocardium in addition to the endocardium/valve.
    Because of the increased volume load from the mitral insufficiency and the inflammatory process, the left ventricle dilates. The left atrium also enlarges to accommodate the regurgitant volume. Increased left atrial pressure results in pulmonary congestion and symptoms of left-sided heart failure.
  • as others cause of MS: Infrequent causes of MS include mitral annular calcification and congenital MS (including parachute mitral valve)
  • Austin Flint murmur: An apical presystolic murmur resembling that of mitral stenosis is sometimes heard and is caused by the large regurgitant aortic flow in diastole preventing the mitral valve from opening fully.
  • Therefore, evidence of prior GAS infection may be sought in one of the following ways:
    ●Positive throat culture for group A beta-hemolytic streptococci
    ●Positive rapid streptococcal antigen test
    ●Elevated or rising antistreptococcal antibody titer – Either antistreptolysin O (ASO) or antideoxyribonuclease B (ADB)
  • Gerber MA, Baltimore RS, Eaton CB, et al. Prevention of Rheumatic Fever and Diagnosis and Treatment of Acute Streptococcal Pharyngitis: A Scientific Statement From the American Heart Association Rheumatic Fever, Endocarditis, and Kawasaki Disease Committee of the Council on Cardiovascular Disease in the Young, the Interdisciplinary Council on Functional Genomics and Translational Biology, and the Interdisciplinary Council on Quality of Care and Outcomes Research. Circulation 2009; 119:1541.
    Nishimura RA, Otto CM, Bonow RO, et al. 2014 AHA/ACC Guideline for the Management of Patients With Valvular Heart Disease. J Am Coll Cardiol 2014; 63:e57.
  • Modified with permission from: Gerber MA, Baltimore RS, Eaton CB, et al. Prevention of Rheumatic Fever and Diagnosis and Treatment of Acute Streptococcal Pharyngitis: A Scientific Statement From the American Heart Association Rheumatic Fever, Endocarditis, and Kawasaki Disease Committee of the Council on Cardiovascular Disease in the Young, the Interdisciplinary Council on Functional Genomics and Translational Biology, and the Interdisciplinary Council on Quality of Care and Outcomes Research. Circulation 2009; 119(11):1541-51. Copyright © 2009 Lippincott Williams & Wilkins.
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    angiotensin receptor blockers (ARBs)
  • angiotensin-converting enzyme (ACE) inhibitors
    angiotensin receptor blockers (ARBs)
  • angiotensin-converting enzyme (ACE) inhibitors
    angiotensin receptor blockers (ARBs)
  • angiotensin-converting enzyme (ACE) inhibitors
    angiotensin receptor blockers (ARBs)
  • angiotensin-converting enzyme (ACE) inhibitors
    angiotensin receptor blockers (ARBs)

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