PU Placenta and Amniotic Fluid Evaluation 3

Question 1

What is vasa previa?

Accepted Answer

Fetal blood vessels crossing the internal os unprotected by placenta or cord

Answer

A placenta covering the cervix

Answer

Umbilical cord prolapse

Answer

Low-lying placenta with cord insertion

Question 2

What is the purpose of color Doppler in placental evaluation?

Accepted Answer

To identify abnormal vascularity and flow patterns suggesting accreta

Answer

To measure placental thickness

Answer

To grade placental maturity

Answer

To count placental lobules

Question 3

A bilobed placenta differs from a succenturiate lobe in that:

Accepted Answer

Both lobes are approximately equal in size

Answer

One lobe is much smaller than the other

Answer

The lobes are not connected by vessels

Answer

The cord inserts in the larger lobe only

Question 4

What finding on ultrasound is characteristic of a circumvallate placenta?

Accepted Answer

Rolled or raised placental edges with membrane insertion inward from the edge

Answer

Placenta covering the cervix

Answer

Abnormal cord insertion

Answer

Calcified placental edges

Question 5

Which measurement technique is preferred when the umbilical cord obscures fluid pockets in AFI assessment?

Accepted Answer

Single deepest pocket (SDP) method

Answer

Doppler flow measurement

Answer

Placental volume calculation

Answer

Fetal bladder volume

Question 6

At what gestational age does the placenta normally migrate away from the cervical os?

Accepted Answer

By 28–32 weeks as the lower uterine segment develops

Answer

At 20 weeks

Answer

At 16 weeks

Answer

After 36 weeks