Staphylococcus aureus endocarditis: a consequence of medical progress - PubMed (original) (raw)

Multicenter Study

. 2005 Jun 22;293(24):3012-21.

doi: 10.1001/jama.293.24.3012.

Jose M Miro, Bruno Hoen, Christopher H Cabell, Elias Abrutyn, Ethan Rubinstein, G Ralph Corey, Denis Spelman, Suzanne F Bradley, Bruno Barsic, Paul A Pappas, Kevin J Anstrom, Dannah Wray, Claudio Q Fortes, Ignasi Anguera, Eugene Athan, Philip Jones, Jan T M van der Meer, Tom S J Elliott, Donald P Levine, Arnold S Bayer; ICE Investigators

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Multicenter Study

Staphylococcus aureus endocarditis: a consequence of medical progress

Vance G Fowler Jr et al. JAMA. 2005.

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Abstract

Context: The global significance of infective endocarditis (IE) caused by Staphylococcus aureus is unknown.

Objectives: To document the international emergence of health care-associated S aureus IE and methicillin-resistant S aureus (MRSA) IE and to evaluate regional variation in patients with S aureus IE.

Design, setting, and participants: Prospective observational cohort study set in 39 medical centers in 16 countries. Participants were a population of 1779 patients with definite IE as defined by Duke criteria who were enrolled in the International Collaboration on Endocarditis-Prospective Cohort Study from June 2000 to December 2003.

Main outcome measure: In-hospital mortality.

Results: S aureus was the most common pathogen among the 1779 cases of definite IE in the International Collaboration on Endocarditis Prospective-Cohort Study (558 patients, 31.4%). Health care-associated infection was the most common form of S aureus IE (218 patients, 39.1%), accounting for 25.9% (Australia/New Zealand) to 54.2% (Brazil) of cases. Most patients with health care-associated S aureus IE (131 patients, 60.1%) acquired the infection outside of the hospital. MRSA IE was more common in the United States (37.2%) and Brazil (37.5%) than in Europe/Middle East (23.7%) and Australia/New Zealand (15.5%, P<.001). Persistent bacteremia was independently associated with MRSA IE (odds ratio, 6.2; 95% confidence interval, 2.9-13.2). Patients in the United States were most likely to be hemodialysis dependent, to have diabetes, to have a presumed intravascular device source, to receive vancomycin, to be infected with MRSA, and to have persistent bacteremia (P<.001 for all comparisons).

Conclusions: S aureus is the leading cause of IE in many regions of the world. Characteristics of patients with S aureus IE vary significantly by region. Further studies are required to determine the causes of regional variation.

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