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Citrobacter diversus endocarditis.

I Tellez1, G S Chrysant, I Omer

  • 1Division of Infectious Diseases, University of Alabama at Birmingham, 35294-0006, USA.

The American Journal of the Medical Sciences
|January 10, 2001
PubMed
Summary
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This case study highlights Citrobacter diversus causing tricuspid valve endocarditis in an intravenous drug user. This rare Gram-negative infection underscores the need for awareness in this patient population.

Area of Science:

  • Medical Microbiology
  • Infectious Diseases
  • Cardiology

Background:

  • Citrobacter species are Gram-negative bacilli causing various human infections.
  • Endocarditis is a serious heart valve infection, with specific risks in intravenous drug users (IDUs).
  • Gram-negative organisms are infrequently implicated in endocarditis among IDUs.

Observation:

  • A case of tricuspid valve endocarditis is presented.
  • The patient was an intravenous drug user.
  • The causative agent was identified as Citrobacter diversus exclusively.

Findings:

  • Citrobacter diversus, a motile Gram-negative bacillus, was the sole pathogen identified.
  • This represents a rare instance of Gram-negative bacterial endocarditis in an IDU.

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  • The infection specifically affected the tricuspid valve.

    • Implications:

    • This case expands the known spectrum of Citrobacter species' pathogenicity.
    • It emphasizes the importance of considering less common Gram-negative bacteria in endocarditis, particularly in at-risk populations like IDUs.
    • Highlights the need for targeted diagnostics and treatment strategies for Gram-negative endocarditis.