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Updated: Jul 29, 2026
10:36
A Swine Model of Neonatal Asphyxia
Published on: October 11, 2011
Perinatal adaptation of the cardiovascular system
1Department of Pediatric Cardiology, Heart Institute of Japan, Tokyo Women's Medical College, Tokyo.
Early Human Development
|June 1, 1992
Summary
Perinatal cardiovascular changes in fetal rats happen sooner than in humans. The ductus arteriosus, a fetal blood vessel, closes rapidly within 1.5 hours after birth in rats.
Area of Science:
- Cardiovascular physiology
- Perinatal adaptations
- Developmental biology
Background:
- The transition from fetal to neonatal circulation is critical.
- Understanding perinatal cardiovascular changes aids in identifying developmental anomalies.
- Comparative studies offer insights into species-specific adaptations.
Purpose of the Study:
- To investigate the timing and nature of cardiovascular system changes during the perinatal period in rats.
- To compare the developmental trajectory of perinatal cardiovascular adaptations in rats with those in humans.
Main Methods:
- Fetal and neonatal rat models were utilized.
- Cardiovascular parameters were monitored during the perinatal transition.
- Hemodynamic changes associated with ductus arteriosus closure were assessed.
Main Results:
- Significant perinatal cardiovascular adjustments were observed in rats.
- These cardiovascular changes manifest earlier in rats compared to human neonates.
- The ductus arteriosus in rats exhibits rapid closure, completing within approximately 1.5 hours post-birth.
Conclusions:
- Rat models demonstrate accelerated perinatal cardiovascular development.
- The rapid ductus arteriosus closure in rats highlights a key species-specific difference.
- Findings contribute to comparative cardiovascular physiology and developmental research.
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