Unit 2.4 Antenatal & Postnatal Screening Flashcards

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1
Q

What is a diagnostic test?

A

A diagnostic test is a definitive test that will show whether the baby actually has the condition

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2
Q

What are the two types of diagnostic testing?

A
  • CVS

- Amniocentesis

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3
Q

What conditions does amniocentesis look for?

A

Downs syndrome, sickle cell anaemia & spina bifida

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4
Q

When is amniocentesis usually carried out?

A

14-16 weeks

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5
Q

What does the process of amniocentesis involve?

A

The process involves the removal of amniotic fluid, the fetal cells from the fluid are collected and cultured before being examined under microscope

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6
Q

Advantages of amniocentesis?

A
  • prenatal diagnosis possible

- detects neural tube defects

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7
Q

Disadvantages of amniocentesis?

A
  • small risk of miscarraige

- gives results later in pregnancy

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8
Q

What is CVS?

A

CVS is an antenatal test which is used to assess the health of a foetus using cells from the placenta

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9
Q

What does CVS involve?

A

It involves removing and testing a small sample of cells from an area of the placenta called the chorionic villi

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10
Q

Advantages of CVS?

A
  • Prenatal diagnosis possible

- Gives results earlier in pregnancy

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11
Q

Disadvantages of CVS?

A
  • higher risk of miscarraige than amniocentesis

- risks defects to fingers and toes if carried out too early

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