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Infective endocarditis involving an apparently structurally normal valve: new epidemiological trend?
1Asan Medical Center Heart Institute, University of Ulsan College of Medicine, Seoul, Korea.
The Korean Journal of Internal Medicine
|July 16, 2015
Summary
Infective endocarditis (IE) often occurs in patients without prior heart conditions. Undetected valve issues, even in structurally normal valves, contribute to IE development and poorer outcomes, necessitating re-evaluation of at-risk groups.
Area of Science:
- Cardiology
- Infectious Diseases
- Valvular Heart Disease
Background:
- Infective endocarditis (IE) diagnosis is increasing in patients lacking prior heart disease.
- Clinical features of IE in this population require further elucidation.
Purpose of the Study:
- To investigate the incidence of undiagnosed heart conditions in IE patients.
- To determine clinical characteristics and outcomes of IE in patients with and without pre-existing heart disease.
Main Methods:
- Single-center study utilizing echocardiographic and surgical data.
- Analysis of underlying valvular or congenital heart diseases in IE patients.
Main Results:
- A significant proportion of IE patients had no prior heart disease history.
- Undetected mitral valve prolapse was most common; structurally normal valves were also implicated.
- IE in structurally normal valves showed different clinical features and worse outcomes, linked to healthcare-associated IE (HAIE).
Conclusions:
- Structurally normal valves can be affected by IE, particularly in HAIE cases.
- Further research is needed on mechanisms and risk factors (hypertension, ESRD, sleep apnea) for IE in normal valves.
- Reclassification of at-risk groups is warranted for improved clinical outcomes in IE.
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