A pregnant woman has asked the nurse when the best time is to undergo chorionic villus sampling.The nurse's best response is which of the following statements?

Question

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Chorionic villus sampling (CVS) is a procedure performed between the eleventh and twelfth week of gestation, and involves removal of a small sample of tissue (chorionic villi) from the placenta. This procedure is usually recommended for women who have an increased risk of having a baby with a chromosomal or genetic abnormality. CVS is not typically performed later in pregnancy (such as during the second trimester) because the placenta may have moved away from the cervix, making the procedure more difficult and risky.

A Pregnant Woman Has Asked the Nurse When the Best