A pregnant woman is to undergo testing to evaluate for chromosomal abnormalities. Which test would the nurse expect to be done the earliest?
A) Amniocentesis
B) Chorionic villi sampling
C) Triple screen
D) Fetal nuchal translucency
B
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Chorionic villi sampling is performed at 7 to 11 weeks' gestation. Amniocentesis usually is performed after 15 weeks' gestation. A triple screen is usually done between 16 and 19 weeks' gestation. Fetal nuchal translucency must be performed between 11 and 14 weeks.
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