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Updated: Jul 30, 2026

Visualization of Streptococcus pneumoniae within Cardiac Microlesions and Subsequent Cardiac Remodeling
Published on: April 7, 2015
[Clinico-morphological comparison in children with infectious endocarditis]
Insights
Diagnosing infectious endocarditis (IE) in children is challenging, often delaying treatment. This study highlights IE
Area of Science:
- Pediatric Cardiology
- Infectious Diseases
- Pathology
Background:
- Infectious endocarditis (IE) is a serious heart infection.
- Pediatric IE cases present unique clinical and morphological challenges.
- Understanding IE's impact on young patients is crucial for timely intervention.
Purpose of the Study:
- To analyze the clinical and morphological features of infectious endocarditis in children.
- To identify diagnostic difficulties and their impact on treatment initiation.
- To investigate associated cardiac pathologies and causes of mortality in pediatric IE.
Main Methods:
- Retrospective analysis of 21 pediatric patients with infectious endocarditis.
- Examination of clinical data, including age, underlying conditions, and diagnosis.
- Morphological examination of cardiac tissues from autopsy (19 cases) and surgical (2 cases) specimens.
Main Results:
- IE was diagnosed in children aged 2-15 years, often associated with congenital heart disease (15/21).
- Early diagnosis of IE proved difficult, leading to delayed antibacterial therapy.
- Focal myocarditis and postmyocarditic cardiosclerosis were common, contributing to refractory heart failure.
Conclusions:
- Difficulties in early IE diagnosis in children can delay critical antibacterial treatment.
- Associated myocarditis and cardiosclerosis contribute significantly to heart failure in pediatric IE.
- Heart failure and thromboembolism remain the primary causes of mortality in children with IE.
Abstract:
As many as 21 children suffering from infectious endocarditis (IE) were examined for the clinical and morphological picture of the disease. The patients' age ranged from 2 to 15 years. In 15 children, IE developed in association with different congenital diseases; in one patient, in the presence of rheumatic heart disease, and in 5 patients, in unaffected heart valves. The sectional material was examined in 19 cases whereas the operational material in 2 cases. Analysis of the data obtained has shown that early diagnosis of IE (primary and secondary) may not infrequently be fairly difficult, which is likely to result in the late administration of antibacterial therapy. In addition to the involvement of the valvular apparatus of the heart, the majority of the patients demonstrated the signs of focal myocarditis and postmyocarditic cardiosclerosis, which is one of the causes of the development of refractory heart insufficiency. IE children mostly die from heart insufficiency and thromboembolism.
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