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Flashcards in Obstetrics Deck (184)
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1

What is meant by gravidity?

No. of pregnancies a woman has had

2

What is meant by parity?

No. of pregnancies that went beyond 28 weeks' gestation that resulted in delivery

3

What is meant by "para 2+1"?

Woman has had 2 pregnancies beyond 28 weeks and 1 pregnancy terminated/miscarried before 28 weeks

4

How do you calculate an estimated date of delivery (EDD) of a baby?

1 year + 7 days after LMP, minus 3 months

5

What happens to red cell volume during pregnancy and what is the consequence of this?

Red cell volume increases, causing dilution of Hb and a physiological anaemia
Treat with iron supplements

6

What happens to blood pressure during pregnancy?

High in 1st trimester
Falls in 2nd trimester until about 22 weeks
Steady rise to normal by end of term
High blood pressure should normalise within 6 weeks post-partum

7

When is a pregnancy test +ve?

9 days post-conception until 20 weeks gestation
Can be positive up to 5 days after miscarriage

8

When is the booking antenatal visit?

8-12 weeks

9

When is the dating USS done?

Around 10 weeks

10

When is the Down's syndrome nuchal thickness test done?

Can be done with dating scan around 10-11 weeks

11

When is the anomaly scan done?

18 weeks

12

When is the first routine check-up antenatal visit?

25 weeks

13

When may a woman receive anti-D prophylaxis?

28 and 34 weeks' gestation

14

When is the triple assessment for Down's syndrome carried out and what does it measure?

11-13 weeks
Nuchal thickness, bHCG and PAPPA levels

15

Tricyclics are usually OK to prescribe in pregnancy. True/False?

True
but may have withdrawal effects in the foetus

16

Which SSRI has the lowest risk for use in pregnancy?

Fluoxetine
Avoid paroxetine

17

Breastfeeding is contraindicated in those taking psychiatric drugs. True/False?

Generally true, especially citalopram and fluoxetine
Consult psychiatrist for specialist advice

18

When is lithium most teratogenic in pregnancy?

First trimester

19

BZD use is contraindicated in pregnancy. True/False?

True

20

How much folic acid is recommended during pregnancy?

0.4mg until 12th week at least
5mg if increased risk of NTD's (diabetes, epilepsy, obese)

21

Radioiodine and carbamazepine are safe in pregnancy. True/False?

False
Contraindicated - use propylthiouracil instead

22

When should trimethoprim and nitrofurantoin be avoided in pregnancy?

Avoid trimethoprim in the first trimester
Avoid nitrofurantoin in the third trimester

23

In which trimester is there an increased risk of seizures?

First trimester

24

Which anti-epileptic drug has the lowest risk in pregnancy?

Lamotrigine

25

Breastfeeding is safe in those taking anti-epileptics. True/False?

True
Except barbiturates

26

When should methotrexate be stopped with regards to pregnancy?

3 months before trying to conceive

27

Why should NSAID's be avoided in the 3rd trimester?

Can cause premature closure of the ductus arteriosus

28

Which rheumatological antibodies can cross the placenta and cause congenital heart block?

Anti Ro
Anti La

29

What should patients with antiphospholipid syndrome take in pregnancy?

Aspirin and enoxaparin from 6-34 weeks' gestation

30

When can the uterus typically be first felt in pregnancy?

Around 12 weeks