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[Morphologic changes of the coronary vessels in patients with congenital heart defects]
Insights
Congenital heart defects cause adaptive and pathological changes in coronary vessels. These vascular changes influence the heart
Area of Science:
- Cardiovascular Anatomy
- Pathology
- Pediatric Cardiology
Context:
- Congenital heart defects (CHDs) affect coronary vessel structure.
- Understanding these changes is crucial for managing pediatric heart conditions.
- Previous research has not fully elucidated the adaptive and pathological remodeling of coronary vasculature in CHDs.
Purpose:
- To investigate structural alterations in coronary arteries and veins at various branching levels in children with heart defects.
- To determine the role of these vascular changes in cardiac compensation and decompensation.
Summary:
- A study of 127 hearts with congenital defects and 45 controls used anatomical, histologic, and morphometric methods.
- Heart defects led to functional hypertrophy of affected heart regions.
- Coronary arteries and veins underwent adaptive remodeling (hyperplasia, wall thickening, myocyte rearrangement) for compensation.
- Pathological changes (sclerosis, thrombosis) in coronary vessels contributed to heart failure.
Impact:
- Reveals adaptive mechanisms in coronary vasculature during heart compensation.
- Identifies pathological vascular changes that predispose to heart failure in congenital heart disease.
- Provides insights for potential therapeutic targets aimed at improving coronary function in pediatric patients with heart defects.
Abstract:
Results of the study of the structural changes in the coronary vessels at various levels of ramification in patients with heart defects are presented and their role in the heart compensation and decompensation is shown. 127 hearts with congenital defects and 45 control children's hearts were studied. It is established, by means of anatomical, histologic and morphometric methods, that the heart defects are followed by the hypertrophy of the heart regions involved functionally, this being combined with an adaptive and pathologic rearrangement of coronary arteries and veins. The former is expressed in the vessels hyperplasia, thickening of their wall, and in the appearance in the vascular wall of oblique and longitudinal smooth myocytes (this is of importance for the maintenance of the heart compensation state). The latter is manifested in sclerosis, sometimes also thrombosis of the coronary arteries and veins this creating the basis for the heart failure.