title: An Unusual Presentation of Native Valve Endocarditis Caused byStaphylococcus warneri.
abstract: Staphylococcus warneriis a coagulase-negative staphylococcal (CoNS) bacterium. It is a common saprophyte on human skin, present in approximately 50% of the healthy adult population; it has emerged as a cause of serious infection in the past two decades. In most cases, there is a predisposing condition, such as a new implant or surgical procedure, before the identification ofS warnerias the pathogen. It is believed that CoNS are mostly associated with prosthetic valve infections.S warnerican lead to a slow growing and an indolent course and late diagnosis. Cases of CoNS infective endocarditis are less likely to have a vascular or immunologic phenomenon and can lead to large vegetations requiring valve replacement if not detected in time. There are currently only two cases of native valve endocarditis from community-acquiredS warneriin the literature. We report a case of native valve endocarditis in an immunocompetent patient without any of the usual predisposing risk factors. Our case illustrates the importance of CoNS bacteremia and the implications of delayed diagnosis of CoNS endocarditis in clinical practice.
authors.affiliation: Institute of Clinical Physiology, National Council of Research, Pisa, Italy; Department of Internal Medicine, University of Missouri Kansas City, Kansas City MO.
authors.forename: Bhaskar
authors.initials: B
authors.lastname: Bhardwaj
authors.affiliation: Department of Internal Medicine, University of Missouri Kansas City, Kansas City MO.
authors.forename: Udit B
authors.initials: UB
authors.lastname: Bhatnagar
authors.affiliation: Department of Internal Medicine, University of Missouri Kansas City, Kansas City MO.
authors.forename: Darcy G
authors.initials: DG
authors.lastname: Conaway
mesh_terms: D004696:Endocarditis; D004697:Endocarditis, Bacterial / Q000175:diagnosis*; D006801:Humans; D013203:Staphylococcal Infections / Q000150:complications / Q000175:diagnosis*; D013210:Staphylococcus / Q000302:isolation & purification*