6. congenital malformations Flashcards

1
Q

what does a raised nuchal translucency indicate?

A

fluid under the skin of the back of the fetal neck.

raised = high chance of Down’s syndrome (and other chromosomal and heart defects)

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2
Q

when is the nuchal translucency test done

A

12/40

aka 12 weeks

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3
Q

what are indications of downs syndrome in tests done in the first trimester

A
  • maternal serum markers: PAPP-A, free beta-hCG

- fetal marker: raised nuchal thickness

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4
Q

what are indications of downs syndrome in tests done in the second trimester

A

maternal serum markers:

  • AFP
  • E3
  • hCG
  • inhibin A
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