A 68-year-old female had positive blood cultures for MSSA and a paraspinal abscess, which was subsequently drained, and a TEE displayed a large vegetation on the right atrial junction. She was initially treated with oxacillin 2 g every 4 h from days 5 to 12. Negative blood cultures were obtained on day 9. On discharge (day 13), ceftriaxone 2 g every 24 h was initiated for completion of 6 weeks of therapy from first negative blood culture. Follow-up computed tomography (CT) scans showed that the paraspinal abscess resolved.
A 35-year-old female with PMH of invasive breast carcinoma with reported tenderness around her chemotherapy port for 1 week was admitted for Gram-positive BSI. The chemotherapy port was removed on day 2 and cultured MSSA. Vancomycin was discontinued in favor of oxacillin 2 g every 4 h until day 5, when oxacillin was discontinued, and she was discharged on 2 weeks of ceftriaxone 2 g every 24 h.