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[A quantitative study of the structural anomalies in the pulmonary vessels by pulmonary biopsy in children with an
1Departamento de Anatomía Patológica, Universitaria Valle de Hebrón, Barcelona.
Insights
Early surgical repair of ventricular septal defects (VSDs) within six months is recommended. Lung biopsies are crucial for assessing pulmonary vascular disease and predicting surgical outcomes in children with VSD.
Area of Science:
- Pediatric Cardiology
- Pulmonary Hypertension
- Vascular Biology
Context:
- Pulmonary vascular disease is a complication in children with congenital heart defects, specifically those with left-to-right shunts like ventricular septal defects (VSDs).
- Understanding the hemodynamic changes and structural alterations in pulmonary vessels is vital for predicting outcomes after surgical repair.
Purpose:
- To investigate the relationship between hemodynamic parameters and structural changes in the pulmonary vasculature of infants with VSD.
- To evaluate the utility of lung biopsy in assessing the severity of pulmonary vascular disease and guiding surgical timing.
Summary:
- This study analyzed lung biopsies from 17 children under three years old with VSD, focusing on vascular wall histology and medial thickening.
- Significant correlations were found between pulmonary pressure, vascular resistance, age, external vascular diameter, and medial thickening.
Impact:
- Results suggest that intracardiac repair of VSDs should ideally occur within six months of life.
- Lung biopsy is essential for determining medial thickening and vascular proliferation, thereby clarifying post-surgical patient outcomes.
Introduction:
Pulmonary vascular disease occurs in patients with cardiac anomalies and left to right shunt as the cases of interventricular heart defects. The hemodynamic study of the structural changes and their relationship with the pathological lesions are useful to know the state of the pulmonary vessels and to establish the postsurgical patients outcome.
Methods:
We analyzed the morphologic and morphometric data in 17 lung biopsies from children under three years with ventricular septal defect, focused the histologic study in grading the structural changes of the intima, media and adventitial vascular walls and the morphometric evaluation on the thickening of the media and the number of the intracinar arteries.
Results:
There are significant statistical correlation among the pulmonary pressure and the age, the vascular resistances and the age, the cocient between the pulmonary arterial pressure and the systemic pressure and the external vascular diameter, the cocient of the pulmonary and systemic fluxes and the thickening of the media and finally between the pulmonary vascular resistances and the external arterial diameter.
Conclusions:
Our results suggest that the intracardiac repair is desirable within 6 months of life and lung biopsy should be undertaken because is the only way to determine the medial thickening and his muscular of fibrous proliferation that will clarify the post-surgical patients outcome.