ATI Peds Exam 2 Review Questions With Rationale

ATI Peds Exam 2 Review Questions With Rationale

Chapter 10

1.  A woman asks the nurse at a genetic counseling class what test would be the least invasive for Down syndrome. Which information would the nurse most likely include?

a)      Amniocentesis testing is the least invasive.

b)      Fetal nuchal translucency test is the best option.

c)      Chorionic villus sampling is the least invasive.

d)      Maternal serum sampling is presently the best option.

Answer: B

Rationale: Genetic testing for Down syndrome includes amniocentesis and chorionic villus sampling and may confirm a genetic anomaly such as Down syndrome in a developing fetus, but they are all invasive procedures. Maternal serum sampling will not pick up Down syndrome. A fetal nuchal translucency test, as seen on ultrasound and thus not invasive, may be suggestive of the presence of trisomy 21, or Down syndrome.