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Risk for infective endocarditis in bacteremia with Gram positive cocci

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Abstract

Purpose

Infective endocarditis (IE) is a serious complication of bacteremia and is most often caused by Gram positive cocci. We investigated the prevalence of IE in patients where echocardiography was encouraged when bacteremia with Gram positive cocci was present.

Methods

The study included patients with Gram positive cocci bacteremia hospitalized at two Danish hospitals between March and December 2016. Information concerning echocardiography, demographics and bacterial species was collected from the patients’ medical files. Patients without echocardiography were followed for 6 months in order to confirm or reject possible IE.

Results

The study included 585 patients with Gram positive cocci bacteremia, and echocardiography was performed in 414 (71%) of them. The prevalence of IE in patients with high risk bacteremia, i.e. Staphylococcus aureus, non-beta-hemolytic streptococci, Enterococcus faecalis, and coagulase-negative staphylococci was 16%. Patients with Enterococcus faecalis had the highest prevalence of IE (33%) followed by non-beta-hemolytic streptococci (23%) and Staphylococcus aureus (12%). Among low risk bacteremia the prevalence of IE was 1%. The mean age of patients with IE was 74 years (SD 12.9) and 71% were male.

Conclusion

These findings strongly support routine echocardiography in patients with high risk bacteremia and non-performance of echocardiography in patients with low risk bacteremia.

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Acknowledgements

We thank the clinical microbiologists from the Department of Clinical Microbiology at Herlev-Gentofte Hospital for helping us identify patients with Gram positive bacteremia hospitalized in the included hospitals during the study period.

Funding

This work was supported by the Department of Cardiology at Herlev-Gentofte Hospital, Denmark.

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Authors

Corresponding authors

Correspondence to Malene Højgaard Andersen or Kasper Karmark Iversen.

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Conflict of interest

All authors: none declared.

Ethics approval

The study was performed in accordance with the Declaration of Helsinki and was approved by the Danish Data Protection Agency (j.nr.: 2012-58-0004 (3-3013-1845/1)).

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Andersen, M.H., Holle, S.L.K., Klein, C.F. et al. Risk for infective endocarditis in bacteremia with Gram positive cocci. Infection 48, 905–912 (2020). https://doi.org/10.1007/s15010-020-01504-6

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  • DOI: https://doi.org/10.1007/s15010-020-01504-6

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