ch 21-22 test

Question 1

Identify the placental type where the chorionic villi attach but do not invade the myometrium.

Answer 1

Accreta

Question 2

Define a circumvallate placenta.

Answer 2

An abnormally attached placenta with a peripheral raised ring

Question 3

Scars within the uterus, secondary to previous gynecologic surgery, are called which one of the following?

Answer 3

Synechiae

Question 4

Select the acquired maternal problem which results in a placenta thickness of less than 2 cm.

Answer 4

preeclampsia

Question 5

What is the suspected cause of amniotic sheets?

Answer 5

synechiae

Question 6

What is the delivery of the cord before the fetus?

Answer 6

prolapse

Question 7

What is the area between the myometrium and the placenta?

Answer 7

retroplacental

Question 8

What can result in the mimicking of a placenta previa?

Answer 8

overfull bladder

Question 9

The multiple fibrous strands of amnion that develop in utero and may entangle fetal parts to cause amputations or malformations of the fetus are described as which of the following?

Answer 9

Amniotic bands

Question 10

Which of the following maternal diseases can result in early placental maturation?

Answer 10

Hypertension

Question 11

Which of the following is the implantation of the placenta which lies low in the uterus resulting in total or partial covering of the cervix?

Answer 11

placenta previa

Question 12

Which of the following is the crossing of the internal os by the umbilical cord?

Answer 12

Vasa previa

Question 13

Which of the following describes the sonographic characteristic of excessive Whartons’s jelly?

Answer 13

Variably echogenic, soft tissue mass with three vessels visible

Question 14

Which form of placenta previa lies within two centimeters of the internal os?

Answer 14

Low-lying placenta

Question 15

Mucous tissue surrounding the umbilical cord

Answer 15

wharton jelly

Question 16

The placenta is responsible for all of the following except:

Answer 16

hormonal

Question 17

The umbilical cord originates from fusion of the yolk sac stalk and the omphalomesenteric duct at approximately:

Answer 17

7 weeks GA

Question 18

The normal at term umbilical cord length is approximately:

Answer 18

51.5-61 cm

Question 19

The normal term placenta weighs between:

Answer 19

480-600 g

Question 20

A normal placental thickness at 24 weeks gestaton is less than:

Answer 20

4 cm

Question 21

Placental calcifications may be caused by all of the following except:

Answer 21

lung maturity

Question 22

A jelly-like placenta is associated with:

Answer 22

IUGR

Question 23

A placenta is considered low lying if the inferior margin is:

Answer 23

within 2cm of the internal os

Question 24

The most infiltrative form of placenta accreta is:

Answer 24

increta

Question 25

Premature separaton of all or part of the placenta from the myometrium is:

Answer 25

placental abruption

Question 26

A(n) _____________________ bladder can cause a false positive appearance of placenta previa.

Answer 26

over distended

Question 27

Compressed umbilical cords place the fetus at risk for _____

Answer 27

hypoxia

Question 28

The most common reason for emergency postpartum hysterectomy is a __

Answer 28

map

Question 29

The use of color doppler should make the visualization of the umbilical cord insertion into the placenta easily identifiable.

Answer 29

true

Question 30

An accessory placental lobe is also known as a battledore placenta.

Answer 30

false

Question 31

Visualization of multiple ______________________ are highly suggestive of placenta accreta.

Answer 31

lacunae

Question 32

Cord prolapse is defined as:

Answer 32

presentation of the umbilical cord in advance of the fetal presenting part during labor and delivery