MRSA bacteremia and new-onset aortic and mitral regurgitation: a pernicious and tricky association

Abstract

Methicillin-resistant Staphylococcus Aureus (MRSA) bacteremia is a complex and lethal condition. We reported the clinical case of a 58-year-old woman who developed MRSA bacteremia after a 3-month hospitalization for trauma and sepsis. Delay in diagnosis of aortic and mitral endocarditis in the setting of new-onset regurgitations, as the application of suboptimal therapy with linezolid and vancomycin, led to widespread disease with embolic dissemination and development of septic infarctions. Clinicians must be aware of the necessity to consider as high risk of endocarditis new onset valvular regurgitations and of the evidence about the need for daptomycin in treating high-risk MRSA bacteremia.