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Blood Culture-Negative Endocarditis

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Abstract

Despite progress in blood culture media and automated growth detection systems, blood culture-negative endocarditis (BCNE) still represents 5–69.7 % of all endocarditis cases. Under the BCNE acronym are grouped diverse clinical entities: (i) the most common are cases of bacterial endocarditis caused by usual pathogens in which the negativity of blood cultures is explained by the early antibiotic treatment started prior to blood sampling; (ii) endocarditis caused by fastidious microorganisms that require prolonged incubation and/or specific media, including Brucella sp., defective streptococci (Abiotrophia sp., Gemella sp.), HACEK bacteria, Propionibacterium acnes, fungi; (iii) endocarditis caused by strictly (Coxiella burnetii, Tropheryma whipplei) or facultative (Bartonella sp.) intracellular bacteria; and (iv) endocarditis that complicate cancers (marantic endocarditis), auto-immune diseases (lupus, Behçet, rheumatoid arthritis) or allergy to pork. Various diagnostic strategies, combining systematic serological, molecular, biochemical and/or histological assays, have improved the diagnostic yield of BCNE but this condition remains challenging.

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Disclosure

P. Tattevin was supported financially by Abbott Laboratories, Astellas, AstraZeneca, Aventis, Bristol-Myers Squibb, Galderma, Gilead Sciences, Janssen-Cilag, MSD, Novartis, Pfizer, and the medicines company ViiV- Healthcare for research, for the organization of scientific meetings, trainings, and/or to attend national and international conferences.

C. Lamas was supported by Novartis Laboratories to attend national and international conferences.

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Fournier, PE., Watt, G., Newton, P.N., Lamas, C.C., Tattevin, P., Raoult, D. (2016). Blood Culture-Negative Endocarditis. In: Habib, G. (eds) Infective Endocarditis. Springer, Cham. https://doi.org/10.1007/978-3-319-32432-6_18

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