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Circulation changes at birth

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

The key events underlying changes to the fetal circulation after birth are the:

  • initiation of respiration
  • ending of placental blood flow

The circulation changes at birth may be considered in terms of changes to the:

  • umbilical arteries
  • umbilical veins
  • ductus venosus
  • ductus arteriosus
  • foramen ovale

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