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Scand J Infect Dis. 2006;38(10):873-81.

Native-valve infective endocarditis caused by Enterobacteriaceae: report on 9 cases and literature review.

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Service de Réanimation Médicale et des Maladies Infectieuses, Hôpital Bichat-Claude-Bernard, AP-HP, Paris.


Although the demographic characteristics of patients who develop infective endocarditis (IE) have changed over the last few decades, Enterobacteriaceae remain rarely responsible. We report the clinical and epidemiological characteristics of 9 patients with native-valve Enterobacteriaceae IE from 6 French medical intensive care units over a 10-y period and have identified 29 additional cases in the literature. Nearly a third of the 38 patients were immunocompromised and/or had previously known valvular heart disease. Salmonella spp. and Yersinia spp. were the most frequently isolated microorganisms reported in the literature. The overall mortality rate was 24% (9/38) and was lower for operated patients (10% (1/10)) compared to those who did not undergo valve surgery (31% (8/26)). Our results confirmed the rarity of native-valve endocarditis caused by Enterobacteriaceae, pathogens frequently responsible for nosocomial and community-acquired bacteraemias. This paradox may be explained by susceptibility to the bactericidal action of serum and the inability of these bacteria to colonize the endocardium.

[Indexed for MEDLINE]

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