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A 37-year-old female presents to the emergency room with a fever. Chest x-ray shows multiple patchy infiltrates in both lungs. Echocardiography and blood cultures suggest a diagnosis of acute bacterial endocarditis limited to the tricuspid valve. Which of the following is the most probable etiology? 


A. Congenital heart disease 
B. Illicit drug use 
C. Rheumatic fever 
D. Rheumatoid arthritis 
E. Systemic lupus erythematosus 

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1 Answer

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Best answer
B. Illicit drug use
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