Gram Positive Cocci
A 28-year-old I/V drug user presents with a febrile illness that has lasted 2 weeks. He also C/O dyspnea, cough, arthralgia, diarrhea, and abdominal pain. O/E, a heart murmur is present, and small, tender nodules are found on the finger, small hemorrhages on the palms. Blood cultures are obtaineD. While awaiting lab confirmation, an empiric antibiotic regimen should primarily be directed at which organisms?
Most common cause of acute endocarditis is S. aureus. This is particularly common in intravenous drug users.
The most common valve involved is the tricuspid valve.
Other causes of endocarditis in intravenous drug users are Candida species and Pseudomonas aeruginosa