Related Experiment Video
Updated: Aug 30, 2026

Experimental Endocarditis Model of Methicillin Resistant Staphylococcus aureus (MRSA) in Rat
Published on: June 4, 2012
[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.
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.
Abstract:
We report the case of a Cardiobacterium hominis endocarditis causing an acute mitral insufficiency complicated of left heart failure. The patient has been treated after a few days by surgical valvuloplasty. Cardiobacterium hominis is a bacteria of the HACCEK group, bacille gram-negative, sometimes anaerobic, difficult to isolate. Recently, Polymerase Chain Reaction analysis appears to be effective for the the diagnosis in the identification of fastidious micro-organisms like Cardiobacterium hominis. We have reviewed in the literature 71 cases of Cardiobacterium hominis endocarditis; clinical presentation is often sub-acute, the bacteriological diagnosis is based on hemocultures for which the culture is slow and require enriched environments. Hemodynamic and thrombo-embolic complications are frequent because of the high pathogenicity of the bacteria which provides big and friable vegetations. Despite a high sensibility to antibiotherapy, surgical intervention is often required.
Related Concept Videos
Endocarditis I: Introduction
Endocarditis II: Clinical Features of Infective Endocarditis
Endocarditis III: Medical Management
Endocarditis IV: Nursing Management
Myocarditis II: Clinical Features and Diagnostic Tests
Cardiomyopathy III: Hypertrophic Cardiomyopathy
