Closure of the fetal circulatory adjustments occurs functionally in the following sequence:?
Functional closure of the fetal circulatory adjustements occurs in the following sequence: Ductus venosus > Foramen ovale > Ductus aeriosus. Fetal circulatory adjustment Functional closure Anatomical closure Ductus Venosus After removal of the placenta 7 days Foramen ovale At bih-after breathing is initiated Months to years Ductus aeriosus 10-15 hours 10-21 days Ref: Nelson textbook of pediatrics 21st edition Pgno: 2162
Ductus venosus> Foramen ovale > Ductus aeriosus
Ductus aeriosus > Formen ovale > Ductus venosus
Ductus venosus > Ductus aeriosus > Foramen ovale
Ductus aretriosus > Ductus venosus > Foramen ovale
C.V.S