[Cardiobacterium hominis endocarditis. A case report]

E Balcou-Leroy1, J Bera, A S Fugére

  • 1Service de médecine polyvalente, centre hospitalier de Dunkerque, avenue Louis Herbeaux, 59240 Dunkerque.

Archives Des Maladies Du Coeur Et Des Vaisseaux
|October 24, 2003
PubMed

Insights

Cardiobacterium hominis endocarditis can cause severe heart failure and requires prompt surgical intervention. Advanced diagnostic methods like Polymerase Chain Reaction improve the identification of this difficult-to-culture bacterium.

Area of Science:

  • Infectious Diseases
  • Cardiology
  • Microbiology

Background:

  • Cardiobacterium hominis, a member of the fastidious HACEK group, is an infrequent cause of bacterial endocarditis.
  • Endocarditis due to C. hominis often presents with significant valvular damage and potential hemodynamic compromise.

Observation:

  • This case highlights acute mitral insufficiency and left heart failure secondary to C. hominis endocarditis.
  • The patient underwent successful surgical valvuloplasty for rapid clinical improvement.
  • Literature review of 71 cases indicates a predominantly subacute presentation with frequent thromboembolic and hemodynamic complications.

Findings:

  • Bacteriological diagnosis of C. hominis is challenging due to slow growth and specific culture requirements.
  • Polymerase Chain Reaction (PCR) offers a promising, effective method for identifying fastidious organisms like C. hominis.
  • Large, friable vegetations contribute to the high pathogenicity and complication rate.

Implications:

  • Early diagnosis and intervention, including surgery, are crucial for managing C. hominis endocarditis.
  • Molecular diagnostic techniques like PCR are vital for improving the detection of rare bacterial pathogens.
  • Understanding the clinical and microbiological features of C. hominis endocarditis informs treatment strategies and patient outcomes.

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