Invasive Prenatal Diagnosis Overview

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Questions and Answers

What is one of the indications for considering invasive prenatal diagnosis?

  • Maternal obesity
  • Family history of hypertension
  • Positive screening for aneuploidy (correct)
  • Multiple births

Which invasive prenatal test is typically performed between 10 and 14 weeks of gestation?

  • Ultrasound-guided biopsy
  • Cordocentesis
  • Amniocentesis
  • Chorionic villus sampling (correct)

What is the ideal time frame for performing amniocentesis?

  • 15–20 weeks
  • 20–24 weeks
  • 16–18 weeks (correct)
  • 10–14 weeks

Which characteristic distinguishes chorionic villus sampling from amniocentesis in terms of study material?

<p>Cytotrophoblast vs amniocytes (D)</p> Signup and view all the answers

What potential risk is associated with chorionic villus sampling?

<p>Increased fetal loss (A)</p> Signup and view all the answers

Flashcards

Prenatal Diagnosis

A prenatal test that examines fetal chromosomes and genes to identify genetic disorders.

Positive Screening for Aneuploidy

A test that indicates a higher chance of a fetus having a chromosomal abnormality.

Chorionic Villus Sampling (CVS)

A procedure where a sample of chorionic villi, which contain fetal cells, is taken from the placenta.

Amniocentesis

A procedure where a sample of amniotic fluid containing fetal cells is taken.

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Ideal Time for CVS

The ideal time to perform CVS is between 11 and 13 weeks + 6 days.

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