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Pulmonary vascular development: normal values of peripheral vascular structure.
The American Journal of Cardiology
|September 1, 1983
Summary
This study quantifies normal lung development in children, detailing changes in arterial size, number, and muscularity from infancy to adolescence. These findings establish crucial reference values for pediatric lung health assessments.
Area of Science:
- Pediatric Pulmonology
- Developmental Biology
- Anatomy
Background:
- Understanding normal lung development is crucial for diagnosing pediatric respiratory conditions.
- Quantitative data on lung vasculature in children is limited.
Purpose of the Study:
- To establish normal morphometric values for pulmonary arteries in children.
- To characterize the growth and maturation of lung vasculature from birth through adolescence.
Main Methods:
- Quantitative morphometric analysis of postmortem lung tissue from 49 children (1 hour to 14 years).
- Assessment of arterial size, number, and medial thickness in the respiratory region.
- Correlation of vascular parameters with age and stature.
Main Results:
- Arterial size and number increased rapidly in early infancy (first 2 months), with sustained growth for 4 years.
- Arterial medial thickness decreased significantly in the first 3 months of life.
- Intra-acinar arteries showed increased muscularity with age; vein wall thickness remained low.
Conclusions:
- Provides normative data for pediatric lung arterial development.
- Highlights key developmental stages of lung vasculature in childhood.
- Offers a baseline for evaluating pediatric lung biopsies and disease states.