antenatal screening Flashcards

1
Q

anencephaly

A

without parts of the brain and skull

neural tube defect (NTD)

usually die during birth or shortly after

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2
Q

Placenta praevia and what do you do

A

placenta is low lying in the uterusandcovers all or part of the cervix

check again at 32 weeks gestation

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3
Q

Trisomy Screening

A

Down’s syndrome T21
Edward’s Syndrome T18
Patau’s Syndrome T13

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4
Q

down syndrome risk and maternal age

A

increases after 25

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5
Q

NIPT

A

Cell free fetal DNA (cffDNA) testing is also known as Non-Invasive Prenatal Testing (NIPT)

CffDNA is detectable from around 10 weeks of pregnancy and the amount of detectable DNA is thought to rise as the pregnancy continues

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6
Q

diagnostic tests and miscarriage rates

A

Amniocentesis:
Usually performed after 15 weeks
Carries a miscarriage rate of <1%
Chorionic villus sampling:
Usually performed after 12 weeks
Carries a miscarriage rate of <2%

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7
Q

rhesus d physiology

A

so if baby has different blood group to mum then when delivered some of babys blood goes into mum

then mums body creates antibodies so if gets pregnant again, it can reject baby so give anti d

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