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[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
Summary
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.