Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Case Reports
. 2017 Sep 20:10:88-90.
doi: 10.1016/j.idcr.2017.08.008. eCollection 2017.

Rare case of Rhizobium radiobacter bioprosthetic mitral valve endocarditis

Ryan Halas  1 , Chris Jacob  2 , Karun Badwal  2 , Rafi Mir  2
Affiliations
Case Reports

Rare case of Rhizobium radiobacter bioprosthetic mitral valve endocarditis

Ryan Halas et al. IDCases. .

Abstract

Rhizobium radiobacter is an aerobic, gram negative, rod-shaped, bacterium typically found in the soil. Commonly a plant pathogen, it is also a rare human pathogen causing serious disease. Risk factors for infection include neutropenia, leukopenia, catheters, hospitalization, and low CD4+ lymphocyte count, especially in patients with malignancy or human immunodeficiency virus. There is currently limited literature to establish a definitive guideline for antimicrobial therapy and obtaining susceptibilities from a specialized laboratory is appropriate. We present a successfully treated case of R. radiobacter bioprosthetic mitral valve endocarditis in a patient with previous S. epidermidis endocarditis.

Keywords: Agrobacterium; Endocarditis; Rhizobium; Rhizobium radiobacter.

PubMed Disclaimer

Figures

Fig. 1
Fig. 1
Transesophageal echocardiogram (TEE) showing two small mobile masses. One appears on the ventricular aspect and the other on the atrial aspect of bioprosthetic mitral valve.
Fig. 2
Fig. 2
Repeat TEE showing almost entire resolution of previously identified vegetations, with only small residual mass on atrial aspect of bioprosthetic valve.
See this image and copyright information in PMC

References

    1. Lai C.C., Teng L.J., Hsueh P.R., Yuan A., Tsai K.C., Tang J.L., Tien H.F. Clinical and microbiological characteristics of Rhizobium radiobacter infections. Clin Infect Dis. 2004;38:149–153. - PubMed
    1. Manfredi R., Nanetti A., Ferri M., Mastroianni A., Coronado O.V., Chiodo F. Emerging gram-negative pathogens in the immunocompromised host: Agrobacterium radiobacter septicemia during HIV disease. New Microbiol. 1999;22:375–382. - PubMed
    1. Plotkin G.R. Agrobacterium radiobacter prosthetic valve endocarditis. Ann Intern Med. 1980;93(6):839–840. - PubMed
    1. Young J.M. Classification and nomenclature of Agrobacterium and Rhizobium – a reply to Farrand et al. (2003) Int J Syst Evol Microbiol. 2003;53(5):1689–1695. - PubMed
    1. Ponnapula S., Swanson J.M., Wood G.C., Boucher B.A., Wells D.L., Croce M.A. Treatment of Rhizobium radiobacter bacteremia in a critically ill trauma patient. Ann Pharmacother. 2013;47(11):1584–1587. - PubMed

Publication types

LinkOut - more resources