Foetal Circulation

Question 1

What connects the pulmonary bifurcation to the aorta?

Answer 1

Ductus arteriosus

Question 2

What connects the umbilical vein to the IVC?

Answer 2

Ductus venosis

Question 3

What connects the right atrium to the left atrium?

Answer 3

Foramen ovale

Question 4

What is the importance of the foramen ovale?

Answer 4

Enables oxygenated blood entering RA to bypass lungs

Question 5

Once oxygenated blood has moved through the foramen ovale, where does it go?

Answer 5

Enters LV and pumped into the aorta

Question 6

What is the importance of the ductus arteriosus?

Answer 6

Enables deoxygenated blood to go to placenta to get oxygenated

Question 7

What is the importance of the ductus venosus?

Answer 7

Allows blood from the placenta to bypass the liver

Question 8

What results in closure of the foramen ovale?

Answer 8

Baby’s first breath after

Question 9

What is the remnant of the umbilical vein in adults?

Answer 9

Ligamentum teres

Question 10

What is the remnant of the ductus venosus in adults?

Answer 10

Ligamentum venosus

Question 11

What helps keep ducts open if the fail to close?

Answer 11

IV PGE2

Question 12

DiGeorge syndrome is associated with?

Answer 12

Tetralogy of Fallot

Question 13

What is Tetralogy of Fallot (PROV)?

Answer 13

Pulmonary stenosis, RVH, Overriding aorta and VSD

Question 14

Turner’s syndrome is associated with + where it affects?

Answer 14

Coarctation of the aorta + where the ductus arteriosus used to be

Question 15

Rib-notching on CXR?

Answer 15

Coarctation of the aorta

Question 16

Radial-radial delay?

Answer 16

Coarctation of the aorta or aortic dissection