Timings : Mon to Sat pm

Dr.Niraj Mahajan
Dr.Niraj Mahajan
Dr.Niraj Mahajan


Twins Pregnancy

By AdminPosted On 05-Oct-2016

1. Multiple pregnancy increases

a) In white people more than black

b) With advancing maternal age

c) With bromocriptine use for infertility treatment

d) If first pregnancy

e) After ovarian diathermy for polycystic ovary syndrome

Correct Answer: b) With advancing maternal age. Older women have higher levels of a FSH (follicle-stimulating hormone) and they are more likely to prepare more than one egg per menstrual cycle.

2. Presentation in Twins

Which of the following is known to be the commonest presentation in twins

a) Breech, cephalic

b) Cephalic, breech

c) Cephalic, cephalic

d) Breech, breech

e) Cephalic, transverse

Correct Answer: c) Cephalic, cephalic. This is the most common way twins tend to lie in the uterus, accounting for 45%. When both babies are head down they are treated very similarly to single babies lying head down for the labour and birth. b) Cephalic, breech is the second most common position combination, accounting for 40% of twin pregnancies.

3. Monozygotic twins differ in

a) DNA fingerprint

b) Fingerprint

c) Blood group

d) Color of iris

Correct Answer: b) Fingerprint. The pattern of our fingerprints is set up by our genes. Environment can change our DNA too. We all build up mutations in our DNA over time. Although identical twins have the same genotype, or DNA, they have different phenotypes, meaning that the same DNA is expressed in different ways.

Traits determined by phenotype, such as fingerprints and physical appearance, are the result of "the interaction of the individual genes and the developmental environment in the uterus." Thus, a DNA test can't determine the difference between identical twins, while a simple fingerprint can."

4. Monozygotic Twins

If division of fertilized egg occurs between 4th – 8th day of conception, what kind of monozygotic twin pregnancy will it give rise to

a) Diamniotic dichorionic twin

b) Diamniotic monochoricnic twin

c) Monoamniotic monochononic twin

d) Conjoined twin

e) Monoamniotic Dichorionic twin

Correct Answer: b) Diamniotic monochoricnic twins

Monochorionic twins have two amniotic sacs (called Monochorionic-Diamniotic "MoDi"), which occurs in 60–70% of the pregnancies with monozygotic twins.

5. Twin-to-twin transfusion syndrome

Twin-to-twin transfusion syndrome occurs in monochorionic twins. Donor twin is small and anemic. Recipient twin is polycythemic and large. Which of the following most likely to show abnormality in either twins while performing USG?

a) Urinary Bladder

b) Kidney

c) Cerebellum

d) Limbs

e) Gall bladder

Correct Answer: a) Urinary Bladder. In ultrasound donor's bladder is not visible while the recipient's bladder is enlarged.

6. Monochorionic Monoamniotic Twin

Which one of the following pregnancies carries the highest risk of adverse outcome?

a) Singleton pregnancy

b) Dichorionic diamniotic (DCDA) twin

c) Monochorionic diamniotic (MCDA) twin

d) Monochorionic monoamniotic (MCMA) twin

e) Disappearing twin

Correct Answer: d) Monochorionic monoamniotic. Pregnancies that share the placenta and amnion are at highest risk of adverse outcome because of risk of twin-to-twin transfusion syndrome and cord entanglement. Singleton pregnancy is the lowest risk of adverse outcome compared to the other options. The disappearing twin pregnancy probably has a similar risk to a singleton pregnancy.

Prev Next

"Authored By Dr.Niraj Mahajan"

Enquire Now

Location Map

Our Doctor


Dr. Niraj Mahajan

MD- Gynecologist, Laparoscopic Surgeon, Uro-gynecologist , Infertility specialist & Cosmetic Gynecologist.

Read more [+]

Call Us