Twin Pregnancy

Question 1

Incidence of monozygotic twins changes

Answer 1

False it remains same
1 in 250

Question 2

Hellens rule

Answer 2

If incidence of twins is 1 in 80
Triplets will be 1 in 80*2
Quadruplets will be 1 in 80 3

Question 3

Incidence of dizygotic twins

Answer 3

Nigeria 1 in 20
India 1 in 80
Japan 1 in 200

Question 4

Superfecundation

Answer 4

One cycle
2 ova at different times
Foetus are days are apart
May occur in humans

Question 5

Superfetatiom

Answer 5

2 ova in 2 cycles
Theorical possibility
Practically not possible
Fetous 1 month. Apart

Question 6

Risk factors

Answer 6

Geography distribution
Maternal age
Maternal predisposing
Ivf clomifine citrate, hmg

Question 7

Chorion is formed by

Answer 7

8 days of fertilisation

Question 8

A minion is formed by

Answer 8

10 days of fertilisation

Question 9

If the division occurs on 8-12 days

Answer 9

Monochorionic monoamniotic

Question 10

4-8 days division

Answer 10

Monochorionic di amniotic

Question 11

More than 12 days

Answer 11

Conjoined twins

Question 12

How conjoined twins are managed

Answer 12

C section
32-34 weeks after giving corticosteroids for lung

Question 13

Most common variate of monozygotic twins

Answer 13

Mono chorionic di amniotic

Question 14

Prognosis depends on

Answer 14

Choriocinity

Question 15

Investigation of choice of choriocinity

Answer 15

Ultrasound

Question 16

Twin peak sign /lambda sign

Answer 16

Is seen in Monochorionic diamniotic twins

Question 17

T sign is seen in m

Answer 17

Monochorionic diaamniotic
Monochorionic monoamniotic

Question 18

Complication of Monochorionic diamniotic

Answer 18

Twin to twin transfusions syndrome

Question 19

Complications of Monochorionic monoamnio

Answer 19

Cord entanglement

Question 20

Delivery of dichorionic diamniotic

Answer 20

38 weeks

Question 21

Monochorionic diamniotic delive

Answer 21

36

Question 22

Monochorionic monoamniotic delivery

Answer 22

32-34 weeks

Question 23

Best time to do ultrasound

Answer 23

10 weeks

Question 24

Why ultra sound is done

Answer 24

To look for unchallenged tuberosity
To know gestational age
To know chorionocity

Question 25

Earliest time where we can do use for chorionicity

Answer 25

7 weeks

Question 26

Markers of dichorionicity

Answer 26

Membrane thickness >2 mm
Difference placentas
Twin peak sign4 layers of membranes

Question 27

Complications of conjoined twins

Answer 27

Paraphagus joined at abdomen and pelvis

Question 28

Least complication of conjoined twins

Answer 28

Rachiphagus joined at level of vertebral column
If rachiphagus not there craniophagus

Question 29

Maternal risks of twin pregnancy

Answer 29

Haemo dynamic changes
Placental size preeclampsia
Abrubtio placenta
Placenta Previn
Hcg increases hyperemesis gravidarum
Human placental lactogen gestational diabetes
Intrahepatic cholestasis
Acute fatty liver
Polyhydrominos

Question 30

Twin pregnancy is the risk factor for pih

Answer 30

Start mother on low dose aspirin 80-150 mg/ day before 16 weeks ideally at 12 weeks

Question 31

3 complications which are related to twin pregnancy all not relating to chorionicity or amniocity

Answer 31

Preterm labour
Ingrid
Congenital anomalies

Question 32

Most common twin pregnancy complications

Answer 32

Pretermlabour

Question 33

Feral reduction is commonly done at

Answer 33

10 -13 weeks
Does not effect the survival

Question 34

What are criterion for cervical cerclage

Answer 34

2 nd term abortion
Per term labour
Short cervix < 2.5 cm