Multifetal Gestation

Question 1

What are Diamniotic/Dichorionic Twins? (2 sac 2 placenta)

Answer 1

Division within 3 days of fertilization

Question 2

What are Diamniotic/ Monochorionic Twins? (2 sac, 1 placenta)

Answer 2

Division within 4-8 days of fertilization

Chorion has begun to develop but amnion has not

Question 3

What are MonoAmniotic/ Monochorionic Twins?

Answer 3

Division between 9-12 days after devt of amnion and Chorion. Share a common sac

Question 4

What are conjoined twins?

Answer 4

Division occurrs incompletely

Question 5

What are the most common risks/complications of Multiple gestations?

Answer 5

Preterm labor and delivery
Anemia
Operative delivery
Discordant growth
Hemhorrage from atony
Congenital anomalies

Question 6

What is Twin-Twin transfusion syndrome?

Answer 6

Anastamosis of Blood between fetuses

1 chorion and 2 amnion

Question 7

What will be seen in the Donor and Recipient twin in Twin/Twin transfuions?

Answer 7

Donor: Impaired Growth, anemia, hypovolemia, oligohydramnios
Recipient: Hypervolemia, HTN, polycythemia, CHF, Polyhydramnios

Question 8

What is the Tx of TTTS?

Answer 8

Endoscopic Intrauterine laser ablation of anastamosis