Anaes Vivas · Applied cardiovascular & respiratory physiology
Data viva — fetal-to-neonatal circulatory transition
A Primary data viva — read the fetal shunt pattern; explain the transition mechanism (PVR falls, cord clamping, oxygen closes ductus); state PPHN and its consequence.
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Prompt
A Primary data viva — read the fetal shunt pattern; explain the transition mechanism (PVR falls, cord clamping, oxygen closes ductus); state PPHN and its consequence.
Stimulus
A two-column diagram shows fetal circulation (foramen ovale, ductus arteriosus, ductus venosus shunting blood past the lungs) and neonatal circulation (shunts closed, adult pattern). Trace the fetal circulation, explain the transition at birth, and state what PPHN is.
References2ShowHide
- [4]Piani F, et al. Maternal and neonatal circulation. Am J Physiol Heart Circ Physiol, 2026.PMID 41525138
- [6]Sehgal A, et al. The left ventricle in well newborns versus those with perinatal asphyxia, haemodynamically significant ductus arteriosus or fetal growth restriction. Transl Pediatr, 2023.PMID 37814715