SCMC Transitional Circulation Dramatic changes in circulation at the moment of birth and onwards Air breadth-lung expansion-Rp i Qp↑- LA pressure↑-PFO↓ POT- ductus arteriosus and venosus Obliteration of placental circulation Rs↑ Persistance of the Fetal Circulatin IVC pressure↓-PFOTransitional Circulation Dramatic changes in circulation at the moment of birth and onwards : – Air breadth - lung expansion - Rp ↓ – Qp ↑ - LA pressure ↑ - PFO ↓ – P O2 ↑ - ductus arteriosus and venosus ↓ – Obliteration of placental circulation - Rs ↑ – IVC pressure ↓ - PFO ↓