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Pathology of active infective endocarditis: a necropsy analysis of 192 patients
Insights
Successful treatment of infective endocarditis, particularly aortic valve infections, often necessitates cardiac valve replacement. This study examines the morphology of active infective endocarditis in native and prosthetic valves.
Area of Science:
- Cardiovascular Pathology
- Infectious Diseases
Background:
- Infective endocarditis (IE) frequently requires cardiac valve replacement during active infection.
- Aortic valve IE and prosthetic valve IE (aortic or mitral positions) commonly necessitate surgical intervention.
- Tricuspid valve IE may also require valve excision or replacement.
Purpose of the Study:
- To describe the morphologic features of active infective endocarditis affecting native cardiac valves (right and left-sided).
- To examine the morphologic characteristics of mechanical and bioprosthetic valve substitutes in the context of IE.
- To provide insights into the pathological manifestations of IE in various cardiac valve positions.
Main Methods:
- Necropsy examinations were performed on 192 patients diagnosed with active infective valvular endocarditis.
- Morphologic data from these examinations formed the basis of the analysis.
- Exclusion criteria included IE complicating congenital heart disease with a shunt and IE following valvulotomy.
Main Results:
- Detailed morphologic descriptions of active IE in native aortic, mitral, and tricuspid valves were compiled.
- Morphologic findings related to IE on mechanical and bioprosthetic valve substitutes were analyzed.
- The study provides a comprehensive overview of the pathological changes associated with active IE.
Conclusions:
- Understanding the morphologic aspects of active IE is crucial for guiding treatment strategies, including valve replacement.
- The findings highlight the significant impact of IE on native and prosthetic cardiac valves.
- This necropsy-based study contributes to the pathological understanding of infective endocarditis.
Abstract:
Successful treatment of infective endocarditis often requires cardiac valve replacement during the active infection. This is especially the case with aortic valve infection, and with infection of valve prostheses in either the aortic or mitral position. Valve excision with or without replacement, however, is also sometimes required for tricuspid valve infection (1). This discussion will focus on the morphologic aspects of active infective endocarditis involving both right and left-sided native cardiac valves. It will also examine certain morphologic aspects of mechanical and bioprosthetic valve substitutes. The information is derived from necropsy examination by the authors of 192 patients with active infective valvular endocarditis (Table 1). Of the 192 patients, 129 were described in an earlier publication (2). Patients with infective endocarditis complicating congenital heart disease with a shunt (6 patients), and those with infective endocarditis following valvulotomy (4 patients) are omitted from this analysis.