Author Question: The parents of a child with a karyotype of 47,XY, +21 ask the nurse what this means. Which is an ... (Read 188 times)

j.rubin · **on:** Jun 28, 2018

The parents of a child with a karyotype of 47,XY, +21 ask the nurse what this means. Which is an accurate response by the nurse?

a. This karyotype is for a normal male.
b. This karyotype is for a normal female.
c. This karyotype is for a male with Down syndrome.
d. This karyotype is for a female with Turner's syndrome.

Question 2

A clinic nurse is planning a teaching session for childbearing-age female clients. Which should the nurse include in the teaching session with regard to avoiding exposing a fetus to teratogens?

a. Use only category A medications during pregnancy.
b. Immunizations should be updated during the first trimester of pregnancy.
c. Use of saunas and hot tubs during pregnancy should be during the winter months only.
d. Alcoholic beverages can be consumed in the first and third trimesters of pregnancy.

xMRAZ · **Reply #1 on:** Jun 28, 2018

Answer to Question 1

ANS: C
This child is male because his sex chromosomes are XY. He has one extra copy of chromosome 21 (for a total of 47, instead of 46), resulting in Down syndrome. A normal female would have 46 chromosome and XX for the sex chromosomes. A normal male would have 46 chromosomes. A female with Turner's syndrome would have 45 chromosomes; the sex chromosome would have just one X.

Answer to Question 2

ANS: A
In well-controlled studies, class A medications have no demonstrated fetal risk. Immunizations for diseases such as rubella are contraindicated during pregnancy. Use of saunas and hot tubs are not recommended because maternal hyperthermia is an important teratogen. Alcohol is an environmental substance known to be teratogenic.