Obstetrics Past Paper (MCQ)

Question 1

Parity is:
A. Any birth > 24 weeks
B. Any birth > 22 weeks
C. Any birth > 22 weeks including current
D. Any birth between 14–22 weeks

Answer 1

A

Question 2

Which is not a physiological change in pregnancy?
A. Dependent edema
B. Increase in peripheral vascular resistance
C. Systolic murmur
D. Tachycardia
E. Decreased BP in 2nd trimester

Answer 2

B

Question 3

Which one is used to assess fetal growth at the gestation of week 18?
A. Crown-rump length
B. Biparietal diameter
C. Amniotic fluid index

Answer 3

B
CRL up to 13w+6; head circumference from 14-20w.

Question 4

Concerning fetal circulation, which of the following receive the most blood supply from fetal heart?
A. Brain
B. Liver
C. Kidney
D. Lungs
E. Placenta

Answer 4

E

Question 5

What is the definition of gravidity?
A. Any pregnancy > 22 weeks including current pregnancy
B. Any pregnancy including current pregnancy
C. Any pregnancy > 24 weeks
D. Any pregnancy > 22 weeks

Answer 5

B

Question 6

An obstetric USG in 18–20 weeks is better than that in 10–14 weeks for which of the following?
A. Detect major fetal congenital abnormalities
B. Estimate gestational age
C. Screen for Down’s syndrome
D. Detect multiple pregnancy
E. Detect uterine abnormalities e.g. fibroid

Answer 6

A
B – dating unreliable from 20w+
C – 1TDS is better than 2TDS (sen 90% vs 80%)
D – best in 1st tri

Question 7

Which of the following is a normal physiological change of pregnancy?
A. Decreased vital capacity
B. Increased residual volume
C. Increased tidal volume
D. Decreased respiratory rate
E. Respiratory acidosis

Answer 7

• ↑ventilation from ↑tidal volume and ↓lung residual volume, i.e. deeper breathing
• NO change in RR
• NO change in VC – diaphragm pushed up but rib cage also expands due to relaxin effect

A – unchanged
B – decreased
D – unchanged
E – decreased pCO2, increased pO2, unchanged pH (due to renal buffering)

Question 8

What is perinatal mortality?
A. No. of stillbirths per 1000 total births
B. No. of stillbirths + no. of neonatal deaths per 1000 total births
C. No. of stillbirths + no. of neonatal deaths per 1000 live births
D. No. of neonatal deaths per 1000 births
E. No. of stillbirths per 1000 live births

Answer 8

• Perinatal mortality = (stillbirth + early neonatal birth)/1000 total births (early neonatal = 0-7d, late neonatal = 7-28d)
• Maternal death = death while pregnant or ≤42d of TOP not necessarily related to pregnancy
• Pregnancy-related death = above duration but necessarily related to pregnancy
• Maternal mortality ratio (MMR) = maternal death / 100k live births
• MMRate = maternal death / 100k women of reproductive age

Question 9

Which one of the following tests is appropriate for preconception screening?
A. Renal function test
B. Rubella
C. Cervical smear
D. Prolactin
E. Endometrial aspiration

Answer 9

B

Rubella is a viral infection that can cause severe birth defects if contracted during pregnancy, particularly during the first trimester. Preconception screening for rubella immunity is essential to ensure that women planning to conceive are protected against the virus. If a woman is not immune to rubella, vaccination can be recommended before pregnancy to minimize the risk of congenital rubella syndrome.

Question 10

What of the followings can be used to assess intrauterine growth restriction?
A. Ankle edema
B. Pallor
C. Hypertension
D. Proteinuria
E. Symphysio-fundal height

Answer 10

E