Chapter 31 Multiple Gestations Flashcards
Twins that have the threat of being conjoined are?
monochorionic monoamniotic
The inner membrane surrounding the fetus is referred to as the ?
Amnion
Twins that result from the fertilization of two separate ova are called?
Dizygotic
The outer membrane surrounding the fetus is referred to as the?
Chorion
Advanced maternal age is considered ?
> 35 years of age
Twins whose bodies are connected at some point are said to be?
Conjoined
The term that indicated the presence of two separate amniotic sacs is?
diamniotic
Twins having two placentas and one amniotic sac are referred to as?
This does not occur
Which term relates the number of amniotic sacs?
Amnionicity
Twins having one placenta and one amniotic sac are referred to as?
Monochorionic monoamniotic
Which term related the number of placentas? A)chorionicity B)Placentation C)Amnioicity D)both A and B
Both A and B
identical twins result from?
monozygoitc twinning
The sonographic examination of twins reveals a triangular extension of the placenta at the base of the membrane. This finding is indicative of?
Dichorionic diamniotic twins
Twins having two placentas and two amniotic sacs are referred to as?
Dichorionic diamniotice
Typically, the first sonographic manifestation of twin-twin transfusion syndrome is?
discordant fetal growth
Conjoined twins that are attached at the abdomen are referred to as?
Omphalopagus
The demise of a twin during the second or third trimester can lead to?
Twin embolization syndrome
The term that indicated the presence of two separate placentas is?
dichorionic
The shunting of blood from one twin to the other is termed?
twin-twin transfusion syndrome
Factors that increase the likelihood of having multiple gestations include all of the following? A) advanced maternal age B)Ovulation induction drugs C)Poor nutrition state D)Maternal predisposition for twins
poor nutritional state
Which of the following can occur as a result of dizygotic twinning? A)monochorionic diamniotic twin B)monochorionic monoamniotic twins C)dichorionic diamniotic twins D)all of the above
dichorionic diamniotic twins
The parasitic twin in acardiac twinning is also referred to as the “pump twin”
false
The twin that will appear larger in twin-twin transfusion syndrome is the?
Recipient
Fraternal twins result from?
dizygotic twinning
Which of the following can occur as a result of monzygotic twinning? A)monochorionic diamniotic twins B)monochorionic monoamniotic twins C)dichorionic diamniotic twins D)all of the above
all of the above
The most common form of monozygotic twins is?
monochorionic diamniotic
All of the following complications are associated with multiple gestations except? A) preterm delivery B) high birth weight C) maternal anemia D) maternal preeclampsia
high birth weight
Acardiac twinning results from?
abnormal links among the placental vessels
Ovulation induction drugs not only increase the likelihood of multiple gestations, but also increase the likelihood of?
Heterotopic pregnancies
Which form of monozygotic twinning is least common?
Monochorioinic monoamniotic