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Multiple Choice
What is one advantage of chorionic villus sampling (CVS) over amniocentesis?
A
CVS has a lower risk of miscarriage.
B
CVS can be performed earlier in pregnancy.
C
CVS is less invasive than amniocentesis.
D
CVS provides a more comprehensive genetic analysis.
Verified step by step guidance
1
Understand the purpose of both procedures: Chorionic Villus Sampling (CVS) and amniocentesis are prenatal tests used to diagnose chromosomal abnormalities and genetic disorders in the fetus.
Identify the timing of each procedure: CVS is typically performed between the 10th and 13th weeks of pregnancy, whereas amniocentesis is usually done between the 15th and 20th weeks.
Consider the invasiveness of the procedures: Both procedures are invasive, but CVS involves taking a sample of placental tissue, while amniocentesis involves extracting amniotic fluid.
Evaluate the risk factors: Both procedures carry a risk of miscarriage, but the risk is generally considered to be similar for both.
Determine the main advantage of CVS: The primary advantage of CVS over amniocentesis is that it can be performed earlier in the pregnancy, allowing for earlier diagnosis and decision-making.