Acute Rheumatic Fever and Rheumatic Cardiac Disease
Özet
Acute Rheumatic Fever (ARF) is an inflammatory disease that occurs 2-3 weeks after a Group A Streptococcus (GAS) infection in genetically susceptible individuals. It remains a major cause of acquired heart disease in children, especially in developing countries. Risk factors include overcrowding, poor hygiene, and limited healthcare access. Cross-reactivation of Streptococcal M protein and carbohydrate antigen with human cardiac proteins such myosin and laminin results in humorally-mediated injury. Due to delayed hypersensitivity to GAS antigens mediated by T lymphocytes, granulomatous inflammation and Aschoff nodules form. It results in an inflammatory response affecting the heart, joints, and nervous system, leading to pancarditis, arthritis, and Sydenham’s chorea. Aschoff nodules are characteristic of ARF-related heart inflammation. Diagnosis is based on the 2015 Modified Jones Criteria, which classify populations as low-risk or high-risk. Echocardiography is crucial for detecting subclinical carditis. ARF can lead to rheumatic heart disease, causing valvular damage, heart failure, and arrhythmias. Treatment involves eliminating GAS infection with antibiotics, preventing recurrences through long-term prophylaxis, and managing inflammation with appropriate medications. Steroids are used for severe carditis, while NSAIDs or aspirin help alleviate arthritis symptoms. Early diagnosis, echocardiographic screening, and patient education on penicillin prophylaxis are crucial to preventing severe cardiac complications.
Akut Romatizmal Ateş (ARA), genetik olarak duyarlı bireylerde Grup A Streptokok (GAS) enfeksiyonundan 2-3 hafta sonra ortaya çıkan inflamatuar bir hastalıktır. Özellikle gelişmekte olan ülkelerde çocuklarda edinilmiş kalp hastalığının önemli bir nedeni olmaya devam etmektedir. Risk faktörleri arasında aşırı kalabalık, kötü hijyen ve sınırlı sağlık hizmeti erişimi yer almaktadır. Streptokok M proteini ve karbonhidrat antijeninin miyozin ve laminin gibi kardiyak proteinleri ile çapraz reaktivasyonu humoral aracılı hasara neden olur. T lenfositlerin aracılık ettiği GAS antijenlerine gecikmiş aşırı duyarlılık nedeniyle granülomatöz inflamasyon ve Aschoff nodülleri oluşur. Kalp, eklemler ve sinir sistemini etkileyen enflamatuar bir yanıtla sonuçlanır ve pankardit, artrit ve Sydenham koresine yol açar. Aschoff nodülleri ARA ile ilişkili kalp enflamasyonunun karakteristik özelliğidir. Modifiye Jones Kriterleri, popülasyonları düşük riskli veya yüksek riskli olarak sınıflandırmaktadır. Ekokardiyografi, subklinik karditi tespit etmek için önemlidir. ARA romatizmal kalp hastalığına yol açarak kapak hasarı, kalp yetmezliği ve aritmilere neden olabilir. Tedavi, antibiyotiklerle GAS enfeksiyonunun ortadan kaldırılmasını, uzun süreli profilaksi ile rekürrensin önlenmesini ve uygun ilaçlarla inflamasyonun yönetilmesini içerir. Steroidler şiddetli kardit için kullanılırken, NSAID'ler veya aspirin artrit semptomlarını hafifletmeye yardımcı olur. Erken tanı, ekokardiyografik tarama ve penisilin profilaksisi konusunda hasta eğitimi, ciddi kardiyak komplikasyonların önlenmesi için önemlidir.
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