Acute Rheumatic Fever Management

Diagnosis and Treatment

The American College of Cardiology recommends performing throat culture or rapid antigen detection test for group A Streptococcus to confirm streptococcal pharyngitis, though testing has low sensitivity and negative results require throat culture confirmation 1, 2
Echocardiography is significantly more sensitive and specific for identifying valvular involvement than auscultation alone, and should be used to detect carditis 3
The American Academy of Family Physicians suggests providing adjunctive therapy with acetaminophen or NSAIDs for moderate to severe symptoms or high fever, but avoiding aspirin in children due to Reye's syndrome risk 2

The American College of Cardiology recommends administering intramuscular benzathine penicillin G 1.2 million units every 3 weeks for high-risk patients, as this regimen demonstrates superior outcomes compared to 4-week intervals 5
For patients allergic to penicillin, the American College of Cardiology suggests oral penicillin V 250 mg twice daily, sulfadiazine 1 g orally once daily, or macrolide antibiotics as alternative regimens 5, 4

The American College of Cardiology recommends continuing secondary prophylaxis for 10 years after last attack or until age 40 years for patients with rheumatic fever and residual valvular disease, and for 10 years after last attack or until age 21 years for patients with rheumatic fever and carditis but no residual heart disease 5, 4
The American College of Cardiology also recommends considering lifelong prophylaxis for patients at high risk of group A streptococcus exposure or with severe valvular disease 5, 6

The American College of Cardiology suggests using guideline-directed medical therapy including diuretics, ACE inhibitors or ARBs, beta-blockers, aldosterone antagonists, and sacubitril/valsartan when left ventricular systolic dysfunction develops 5, 6
The American College of Cardiology recommends evaluating all patients with symptomatic severe rheumatic mitral stenosis for percutaneous mitral balloon commissurotomy or mitral valve surgery within 3 months of diagnosis 6

The American College of Cardiology recommends performing echocardiographic monitoring every 3-5 years for mild disease, every 1-2 years for moderate disease, and every 6-12 months for severe disease or when the left ventricle is dilating 6
The American College of Cardiology suggests maintaining optimal oral health as the most important component of preventing infective endocarditis, and administering influenza and pneumococcal vaccinations according to standard recommendations 5, 4