FE FE Hemodynamics & Blood Flow

Question 1

Which vessel carries the most oxygenated blood from the placenta to the fetus?

Accepted Answer

Umbilical vein

Answer

The umbilical vein carries oxygenated blood from the placenta to the fetal liver and heart.

Question 2

The ductus venosus shunts blood from the umbilical vein directly to which structure?

Accepted Answer

Inferior vena cava

Answer

The ductus venosus connects the umbilical vein to the inferior vena cava, bypassing the hepatic circulation.

Question 3

In fetal circulation, the foramen ovale allows blood to shunt from which chamber to which chamber?

Accepted Answer

Right atrium to left atrium

Answer

The foramen ovale allows oxygenated blood from the right atrium to pass into the left atrium, bypassing the pulmonary circulation.

Question 4

Which fetal shunt connects the main pulmonary artery to the descending aorta?

Accepted Answer

Ductus arteriosus

Answer

The ductus arteriosus connects the main pulmonary artery to the descending aorta, allowing most right ventricular output to bypass the lungs.

Question 5

What percentage of combined cardiac output does the right ventricle contribute in the normal fetus?

Accepted Answer

55%

Answer

The fetal right ventricle contributes approximately 55% of combined cardiac output, making it the dominant ventricle in utero.

(FE) Fetal Echocardiography Certification Practice Test