1. Which one of the following umbilical cord entanglements in the fetus is the most common?
a. nuchal cord
b. true knot
c. false knot
d.
... [Show More] hematoma
A
2. If a single umbilical artery is seen, the sonographer should search for which one of the following?
a. neural tube defect
b. esophageal atresia
c. genitourinary defect
d. abdominal wall defect
C
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3. ____ of the cord may be formed when a loop of cord is slipped over the fetal head or shoulders during delivery.
a. hemangioma
b. false knots
c. hematoma
d.true knots
D
4. Which one of the following occurs when the cord inserts into the membranes before it enters the placenta?
a. prolapse
b. velamentous insertion
c. Battledore placenta
d. vasa previa
B
5. Cord prolapse problems can be produced during all of the following obstetric procedures except:
a. velamentous cord insertion
b. artificial rupture of membranes
c. disengaging the head
d. version and extraction
A
6. Which one of the following problems may lead to inadequate fetal descent?
a. long cord
b. twisted cord
c. short cord
d. ruptured cord
C
7. After birth, the ductus venous turns into which one of the following?
a.ductus arteriosus
b. ligamentum venosum
c. falciform ligament
d. coronary ligament
B
8. Thrombosis of the umbilical vessels is most common in which one of the following?
a. right umbilical artery
b. left umbilical vein
c. umbilical vein
d.hypogastric arteries
C
9. All of the following statements are correct about true knot of the cord except:
a. is associated with long cords
b. has been associated with polyhydramnios
c.color doppler is useful t record flow
d. has been associated with mono amniotic twin gestation
D (all are actually true; not associated with short cord)
10. the presence of umbilical vessels crossing the internal os of the cervix is called which one of the following?
a. placenta previa
b. cord prolapse
c. vaso previa
d. velamentous cord
C
11. The umbilical cord is formed by the fusion of which one of the following?
a. amnion and yolk sac
b. yolk stalk and allantoic ducts
c. yolk sac and allantoic ducts
d. allantoic ducts and chorion
B
12. In the first trimester, the length of the umbilical cord is approximately the same size as which one of the following?
a. mean (gestational) sac diameter
b. biparietal diameter
c. crown-rump length
d. femur length
C
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13. The normal length of the umbilical cord measures ___ cm.
a. 20 to 35
b. 40 to 60
c. 30 to 50
d. 60 to 90
B
14. A cystic mass in the umbilical cord is usually which one of the following?
a. allantoic in origin
b. an omphalocele
c. a false knot of cord
d. a true knot of cord
A
15. Velamentous umbilical cord insertion is associated with all of the following except:
a. preterm labor
b. abnormal fetal heart rate
c. low apgar scores
d. macrosomnia
D [Show Less]