NDT Plus Advance Access originally published online on April 10, 2008
NDT Plus 2008 1(4):253-256; doi:10.1093/ndtplus/sfn026
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Infective endocarditis in haemodialysis patients: 16-year experience at one institution
Division of Nephrology, Saint Louis University Health Sciences Centre, Saint Louis, MO, USA
Correspondence: Corresponding and offprint requests to: Bahar Bastani, Division of Nephrology, Saint Louis University School of Medicine, 3635 Vista Avenue, Saint Louis, MO 63110, USA. Tel: +1-314-577-8765; E-mail: bastanib{at}slu.edu
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Abstract |
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Objectives. To ascertain the characteristics, outcomes and correlates of mortality in chronic haemodialysis patients with confirmed infective endocarditis (IE).
Methods. Patients were identified by computerized discharge diagnosis and chart review of admissions to Saint Louis University hospital from January 1990 through January 2006. Modified Duke Criteria were retrospectively applied to confirm the diagnosis of IE. Survivors and non-survivors were compared to identify clinical correlates of IE mortality.
Results. We identified 59 patients with IE who had received dialysis for a mean duration of 52.9 ± 58.0 months prior to IE diagnosis. Dialysis access comprised 28 (47.5%) catheters, 26 (44.1%) arteriovenous grafts, 3 (5.1%) arteriovenous fistulas and 2 (3.4%) life sites. The causative organisms were MRSA in 15 (25%), MSSA 12 (20%), S. Epidermidis 10 (17%), Enterococci 8 (14%), multi-organism 6 (10%), gram negative 2 (3%) and VRE 1 (2%). Valves involved were mitral valve in 37 (63%), aortic valve in 10 (17%), tricuspid valve in 3 (5%) and multiple valves in 8 (13%) cases. Patient mortality was 28.8% (n = 17) during hospitalization, 37.9% (n = 22) at 30 days and 63.1% (n = 36) at 1 year. In multivariable logistic regression, the adjusted odds ratio of in-hospital mortality was 3.6-fold higher in those with IE and arteriovenous grafts (P = 0.04, 95% CI 1.04–12.27) compared to other forms of dialysis access.
Conclusion. Mortality of IE remains high, despite the availability of potent antibiotics. Patients with arteriovenous grafts who develop IE may face increased risk for in-hospital mortality, perhaps reflecting difficulty eradicating endovascular infection if a graft is involved.
Key Words: end-stage renal disease • haemodialysis • infective endocarditis • mortality
Received for publication February 16, 2008. Accepted for publication February 18, 2008.