A Unique Case of Tri-Valvular Serratia marcescens Infective Endocarditis Complicated by Innumerable Emboli

Walter Evangelista-Abreu, Mrhaf Alsamman, Anteneh Addisu, Nitin Dhaon, Arnaldo Reyes, Lily Knight, Hamza Alaan


Serratia marcescens (S. marcescens) is a gram negative bacterium rarely associated with cases of infective endocarditis (IE). Involvement of three cardiac valves, as evidenced by echocardiography, is uncommon as well. S. marcescens IE and tri-valvular endocarditis have been rarely described in literature. We report a unique case of S. marcescens tri-valvular IE in a 42-year-old female with sudden altered mental status and no underlying structural heart disease complicated by embolic infarcts in both cerebral and cerebellar hemispheres, and a sub-arachnoid hemorrhage. To our knowledge, this is the first reported case of tri-valvular S. marcescens IE. We believe this report will add to the growing literature of rare bacterial IE and considering this in the differential in the right clinical scenario.

J Med Cases. 2022;13(7):349-353
doi: https://doi.org/10.14740/jmc3954


Infective endocarditis; Serratia marcescens; Bacteremia

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