An intravenous drug user has fever, a new murmur, splinter haemorrhages and Roth spots. What is the most likely diagnosis?

Answer and explanation

Correct answer: C. Infective endocarditis

  1. Step 1: The picture of fever with a new murmur and splinter haemorrhages fits Infective endocarditis.
Answer
Infective endocarditis.
Why not the others: 'Rheumatic fever': it follows a streptococcal sore throat with migratory arthritis and carditis. 'Myxoma of the left atrium': it gives constitutional symptoms and embolism without positive blood cultures. 'Viral myocarditis': it follows a viral illness with chest pain and raised troponin.

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