USMLE-Rx Step 1 Qmax Challenge #4130

Check out today’s Step 1 Qmax Question Challenge.

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A 75-year-old man presents with a few weeks of fever and chills. He has hypertension and takes medicines daily to lower his blood pressure and cholesterol, although he cannot remember their names. He is otherwise healthy, although his wife comments that he underwent a dental procedure a few weeks ago. Patient admits that he was supposed to take antibiotics, but was unable to complete course of antibiotics. On physical exam, you find painful, red, raised lesions on his fingers, like that shown in the image.

Which of these is most likely causing this man’s condition?

A. Haemophilus influenzae
B. Staphylococcus aureus
C. Staphylococcus epidermidis
D. Streptococcus pyogenes
E. Viridans streptococci

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