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Morphologic changes in pulmonary vasculature with arteriographic correlation
S Basu1, B N Datta, N Khandelwal
1Department of Hematology, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
Angiology
|April 1, 1996
Summary
Pulmonary vasculature undergoes rapid structural remodeling after birth, with medial thickness decreasing significantly within the first month. This change stabilizes by one month and remains consistent until age fourteen.
Area of Science:
- Cardiovascular Physiology
- Pediatric Pathology
- Pulmonary Vascular Remodeling
Background:
- The fetal pulmonary circulation maintains high resistance.
- Postnatal breathing initiates sequential structural changes in pulmonary vasculature.
- Existing literature presents varied findings on pulmonary vascular remodeling.
Purpose of the Study:
- To delineate the structural changes in pulmonary vasculature following birth.
- To quantify alterations in arterial morphology in children up to fourteen years of age.
Main Methods:
- Autopsy cases (n=25) from newborns to 14-year-olds were analyzed.
- Postmortem arteriography was performed in most cases.
- Histomorphometry was utilized to quantify arterial morphology.
Main Results:
- Newborn pulmonary arteries exhibit a thick-walled structure.
- Medial thickness significantly reduces within one month post-birth, most rapidly in the first three days.
- No significant changes in medial thickness were observed between one month and fourteen years of age.
Conclusions:
- Pulmonary vascular remodeling post-birth is characterized by a rapid reduction in medial thickness within the first month.
- This medial thickness stabilizes after the first month and remains consistent throughout childhood up to 14 years.
- Understanding these changes is crucial for pediatric cardiovascular health.