Flashcards in Maternity Screening Deck (10):
When does neuro tube close?
Around 26 days - 6 weeks
Screening tools for fetal anomaly
Prevalence of trisomy 21
Chance of having a baby with a congenital anomaly
4 things to test for 2nd trimester tests, when take?
alpha fetal protein (used to be for NTDs)
Between 15-20 weeks
Maternal age cut off for Down syndrome?
Offering test to someone who wants to know trisomy 21 but won't terminate if found out?
Risk of miscarriage due to invasive testing
1st trimester screening for T21?
Unchallenged translucency at 11-14 weeks
Plus maternal age
Amniocentesis, fetal cells come from?
Skin, gut, urinary tract. May not pick up mosaicism in the gonads for example.