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Double prosthetic valve endocarditis caused by Streptococcus pneumoniae
K Claes1, F De Man, F Van de Werf
1Dept. of Internal Medicine, University Hospital Leuven, Belgium.
Abstract:
Infective endocarditis (IE) caused by Streptococcus pneumoniae is a rare disease. Only eight cases of pneumococcal prosthetic valve endocarditis have been described in the literature. In this report we describe the first case of pneumococcal endocarditis involving two prosthetic heart valves. The patient had pneumonia as the probable portal of entry but no predisposing conditions for invasive pneumococcal disease. Our case also illustrates the importance of transesophageal echocardiography (TEE) for the early diagnosis of IE and a timely decision for cardiac surgery.
Insights
Infective endocarditis caused by Streptococcus pneumoniae is rare, especially involving two prosthetic valves. Early diagnosis via transesophageal echocardiography is crucial for timely cardiac surgery.
Area of Science:
- Cardiology
- Infectious Diseases
- Medical Microbiology
Background:
- Infective endocarditis (IE) is a serious infection of the heart's inner lining.
- Streptococcus pneumoniae is an uncommon cause of IE, particularly in prosthetic valve endocarditis (PVE).
- Pneumococcal PVE is exceptionally rare, with limited cases reported in medical literature.
Observation:
- This report details the first documented case of pneumococcal endocarditis affecting two prosthetic heart valves.
- The patient presented with pneumonia, likely the source of infection, but lacked typical risk factors for invasive pneumococcal disease.
- Transesophageal echocardiography (TEE) played a vital role in the prompt diagnosis of IE.
Findings:
- The study highlights a unique instance of Streptococcus pneumoniae infecting two prosthetic valves.
- Pneumonia served as the probable entry point for the bacteria.
- The absence of predisposing factors in the patient underscores the potential for invasive pneumococcal disease in diverse clinical scenarios.
Implications:
- This case emphasizes the importance of considering Streptococcus pneumoniae in prosthetic valve endocarditis, even without typical risk factors.
- Transesophageal echocardiography is demonstrated as an essential tool for early and accurate diagnosis of infective endocarditis.
- Timely diagnosis facilitated by TEE is critical for guiding surgical intervention and improving patient outcomes in complex IE cases.