antenatal screening Flashcards
what is measured in the first trimester in down’s syndrome assessment
nuchal thickness (measure of skin thickness behind foetal neck) HCG and PAPPA
what is measured in second trimester in down’s syndrome risk assessment
blood sample
HCG and AFP
what does it mean if >1:250 personal risk of down’s syndrome
high risk - requires further investigation (amniocentesis)
when is amniocentesis performed
after 15 weeks
when is chorionic villus sampling performed
after 12 weeks
what has the greater risk of miscarriage, amniocentesis or chorionic villus testing
chorionic villus testing - 2%
amniocentesis - 1%
what conditions are you at increased risk of developing during pregnancy if you have sickle cell disease
miscarriage
diabetes
antibodies
eclampsia
reasons for maternal anaemia
iron deficiency
folate/B12 deficieny
when is maternal anaemia checked
28 weeks
