A 55-year-old man presents to the emergency department with recurrent fevers over the past 6 weeks. Blood cultures are performed and eventually show an organism that is purple on Gram stain, does not cause hemolysis when plated, and does not survive in 6.5% NaCl. An echocardiogram reveals the presence of native valve endocarditis.
For which of the following conditions should this patient be evaluated to determine the etiology of the endocarditis?
- A) Dental caries
- B) Intravenous drug use
- C) Malignancy of the lower GI tract
- D) Urinary tract infection
- E) Vegetations on intravenous catheter