antenatal screening Flashcards
What happens to women with a single SFH which plots below the 10th centile or serial measurements which demonstrate slow or static growth by crossing centiles
referred for ultrasound measurement of fetal size
Serial measurement of symphysis fundal height (SFH) is recommended at each antenatal appointment from……weeks
24
Advise women at high risk of pre-eclampsia to take 75mg of ? daily from 12weeks until the birth of the baby
asprin
what makes women high risk for pre eclampsia? cs
hypertensive disease during a previous pregnancy
chronic kidney disease
autoimmune disease such as systemic lupus erythematosis or antiphospholipid syndrome
type 1 or type 2 diabetes
chronic hypertension.
Advise women with more than one moderate risk factor for pre-eclampsia to take 75mg of aspirin* daily from 12weeks until the birth of the baby. Factors indicating moderate risk are:
first pregnancy
age 40years or older
pregnancy interval of more than 10years
body mass index (BMI) of 35kg/m2or more at first visit
family history of pre-eclampsia
multiple pregnancy.
.
when can you carry out chronic villus sampling? what is the miscarriage rate?
after 12 weeks. miscarriage rate of 2%
when can you do amniocentesis? miscarriage rate?
15 weeks, 1%
what risk of downs requires further investigation\?
over 1:250
neagles rule? chart?
add 9 months 7 days
when is the nuclei thickness measured?
11-13 weeks
nuchal thickness is raised in a range of conditions
y
nuchal thickness combined with>
HCG and PAPP-A
Down syndrome screening. in second trimester take bloods and assay for?
HCG and AFP
biggest risk in terms of HCG and AFP?
HCG 2.0, AFP 0.5 and maternal age 40. risk is 1 in 10