Ch. 31 Multiple Gestations

Question 1

Twins that have the threat of being conjoined are:
Monochorionic/monoamniotic
Monochorionic/diamniotic
Dizygotic
Dichorionic/diamniotic

Answer 1

Mono/mono

Question 2

The inner membrane surrounding the fetus is referred to as the:
Placenta
Chorion
Amnion
Yolk sac

Answer 2

Amnion

Question 3

Twins that result from the fertilization of 2 separate ova are called:
Diamniotic
Dizygotic
Monozygotic
Monochorionic

Answer 3

Dizygotic

Question 4

The outer membrane surrounding the fetus is referred to as the:
Placenta
Chorion
Amnion
Yolk sac

Answer 4

Chorion

Question 5

Advanced maternal age is considered:
>25 yrs
>30 yrs
>35 yrs
>40 yrs

Answer 5

> 35 yrs

Question 6

Twins whose bodies are connected at some point are said to be:
Fraternal 
Conjoined
Identical
Stuck

Answer 6

Conjoined

Question 7

The term that indicates the presence of two separate amniotic sacs is:
Dichorionic
Bichorionic
Monoamniotic
Diamniotic

Answer 7

Diamniotic

Question 8

Twins having two placents and one amniotic sac are referred to as:
Monochorionic/diamniotic
Monoamniotic/dichorionic
Dichorionic/monoamniotic
This does not occur

Answer 8

This does not occur

Question 9

Which term relates the number of amniotic sacs?
Chorionicity
Placentation
Amnionicity
Both Chorionicity and Placentation

Answer 9

Amnionicity

Question 10

Twins having one placenta and one amniotic sac are referred to as:
Dichorionic/monoamniotic
Dichorionic/diamniotic
Monochorionic/diamniotic
Monochorionic/monoamniotic

Answer 10

Monochorionic/monoamniotic

Question 11

Which term relates the number of placentas?
Chorionicty
Placentation
Amnionicity
Both Chorionicity and Placentation

Answer 11

Both Chorionicity and Placentation

Question 12

Identical twins result from:
Monozygotic twinning
Dizygotic twinning
Heterotopic pregnancies
Monochorionic pregnancies

Answer 12

Monozygotic twinning

Question 13

The sonographic examination of twins reveals a triangular extention of the placenta at the base of the membrane. This finding is indicative of:
Monochorionic/monoamniotic twins
Monochorionic/diamniotic twins
Dichorionic/diamniotic twins
Monochorionic/diamniotic twins

Answer 13

Dichorionic/diamniotic twins

Question 14

Twins having two placentas and two amniotic sacs are referred to as:
Monochorionic diamniotic
Biamniotic dichorionic
Dichorionic diamniotic
DIchorionic biamniotic

Answer 14

Dichorionic diamniotic

Question 15

Typically, the 1st sonographic manifestation of twin-twin transfusion syndrome is:
Oligohydramnios
Polyhydramnios
Dichorionic twinning
Discordant fetal growth

Answer 15

Discordant fetal growth

Question 16

Conjoined twins that are attached at the abdomen are referred to as:
Omphalopagus
Thoracopagus
Ileopagus
Craniopagus

Answer 16

Omphalopagus

Question 17

The demise of a twin during the 2nd or 3rd trimester can lead to:
Twin-twin transfusion syndrome
Twin embolization syndrome
Twin peak sign
Acardiac twinning

Answer 17

Twin embolization syndrome

Question 18

The term that indicates the presence of two separate placentas is:
Dichorionic
Bichorionic
Monoamniotic
Diamniotic

Answer 18

Dichorionic

Question 19

The shunting of blood from one twin to the other is termed:
Twin-twin transfusion syndrome
Twin embolization syndrome
Twin peak sign
Conjoined twins

Answer 19

Twin-twin transfusion syndrome

Question 20

Factos that increase the likelihood of having multiple gestations include all of the following except:
AMA
Ovulation induction drugs
Poor nutritional care
Maternal predisposition for twins

Answer 20

Poor nutritional care

Question 21

Which of the following can occur as a result of dizygotic twinning?
Monochorionic/monoamniotic twins
Monochorionic/diamniotic twins
Dichorionic/diamniotic twins
All of the above

Answer 21

Dichorionic/diamniotic twins

Question 22

The parasitic twin in acardiac twinning is also referred to as the “pump twin”.
True
False

Answer 22

False

Question 23

The twin that will appear larger in twin-twin transfusion syndrome is:
Donor
Recipient
Both will be the same
Both will be demised

Answer 23

Recipient

Question 24

Fraternal twins result from:
Monozygotic twinning
Dizygotic twinning
Heterotopic pregnancies
Monochorionic pregnancies

Answer 24

Dizygotic twinning

Question 25

``` Which of the following can occur as a result of monozygotic twinning? Monochorionic/diamniotic twins Monochorionic/monoamniotic twins Dichorionic/diamniotic twins All of the above ```

Answer 25

All of the above

Question 26

``` The most common form of monozygotic twins is: Monochorionic/diamniotic Dichorionic/monoamniotic Monochorionic/monoamniotic None of the above ```

Answer 26

Monochorionic/diamniotic

Question 27

``` All of the following complications are associated w/ multiple gestations except: Preterm delivery High birth weight Maternal anemia Maternal preeclampsia ```

Answer 27

High birth weight

Question 28

Acardiac twinning results from: * Poor maternal nutrition * Dizygotic gestations * Abnormal links among the placental vessels * Twin embolization syndrome

Answer 28

Abnormal links among the placental vessels

Question 29

``` Ovulation induction drugs not only increase the likelihood of multiple gestations, but also increase the likelihood of: Maternal diabetes Ovarian prolapse Heterotopic pregnancies Choriocarcinoma ```

Answer 29

Heterotopic pregnancies

Question 30

``` Which form of monozygotic twinning is least common? Monochorionic/diamniotic Monochorionic/monoamniotic Dichorionic/diamniotic Dichorionic/biamniotic ```

Answer 30

Monochorionic/monoamniotic