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Review Question - QID 204935

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QID 204935 (Type "204935" in App Search)
A 63-year-old gentleman with a history of mitral valve prolapse presents to his internist with a 2-week history of fever, night sweats, and general malaise. Three weeks ago, he underwent periodontal surgery for gingival hyperplasia, for which he did not receive antibiotic prophylaxis. He denies a history of drug abuse. His physical exam is notable for a temperature of 39 deg C and a faint pansystolic murmur loudest at the cardiac apex. His nails are shown in Figure A, and painful lesions on his fingers are shown in Figure B. What is the most likely causative organism in this case?
  • A
  • B
  • A
  • B