Neonatal Physiology Flashcards

1
Q

What are the structures that are unique to the fetal circulation?

A
  • Ductus venosus (umbilical vein to pulmonary trunk, mostly bypassing liver)
  • Foramen ovale (right atrium to left atrium to mostly bypass lungs)
  • Ductus arteriosis (between pulmonary trunk and aorta)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What happens to these structures at birth (first breath)?

A
  • Close over
  • Umbilical cord constricts, increasing resistance and therefore pressure in umbilical a + v
  • increased BP in systemic circulation
  • PVR in lungs decreases
  • BP in pul. circulation decreases
  • flap in FO closes over
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What respiratory adjustments are made in the baby at birth?

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly