antenatal care and screening in pregnancy

Question 1

booking visit should be done at

Answer 1

12 weeks

Question 2

FBC done at booking visit, what 4 things do you look for?

Answer 2

antibodies, glucose syphilis, rubella

Question 3

when do you fo alpha feto protein?

Answer 3

14 weeks

Question 4

USS?

Answer 4

18 weeks

Question 5

anti D at?

Answer 5

28 weeks

Question 6

BPS at?

Answer 6

42 weeks

Question 7

what is BPS?

Answer 7

biophysical profile - assessment of fetal wellbeing

Question 8

what do anti d antibodies do?

Answer 8

naeutralise any rhd positive rhesus antigens, stops mother generating an immune response to it. ie stops mother making antibodies against rhesus antigen

Question 9

at booking visit, what investigatons are done?

Answer 9

Hb, ABO, rhesus, syphilis, rubella, HIV, hep B and C

Question 10

also do urinalysis, MSSU and c and S

Answer 10

y

Question 11

what does ultrasound at the booking visit confirm?

Answer 11

viability, number of fetus, gestation

Question 12

at follow up what is done on examination?

Answer 12

bp and urinalysis, symphysis - fundal height, lie and presentation, engagement of presenting part, fetal heart auscultation

Question 13

downs syndrome risk assessment - what can you test in first trimester?

Answer 13

skin thickness behind fetal neck using ultrasound (nuchal thickness)

Question 14

when is this done?

Answer 14

11-13 + 6 weeks

Question 15

what is it combined with?

Answer 15

HCG and PAPP-A

Question 16

2nd trimester - when is blood sample (assay of HCG and AFP done?)

Answer 16

15-20 weeks

Question 17

for first and second trimester tests, incorporate the measurement/results with maternal age and give personal risk)

Answer 17

y

Question 18

a risk of greater than__________requires further assessment?

Answer 18

1:250

Question 19

what would this assessment be?

Answer 19

amniocentesis

Question 20

_____AFP, ______HCG and maternal age of _____ gives highest risk of _______

Answer 20

low, high, 40, 1:10. (h block)

Question 21

does a low risk exclude downs syndrome?

Answer 21

no

Question 22

when is amniosccentesis usually performed?

Answer 22

15 weeks

Question 23

miscarriage rate of?

Answer 23

1%

Question 24

chronic villus sampling - when is it one? mc rate?

Answer 24

12 weeks, 1-2%