During preconception counseling, the nurse explains that the ...

[Chelseaamend]

During preconception counseling, the nurse explains that the fetus is most vulnerable to the effects of teratogens during which time period?
 
  A.
  2 to 8 weeks
  B.
  4 to 12 weeks
  C.
  5 to 10 weeks
  D.
  6 to 15 weeks

Question 2

The prenatal clinic nurse is providing information to a pregnant woman who is at 15 weeks' gestation. The patient asks when she should expect to feel fetal movement. Which of the following is the most appropriate answer by the nurse?
 
  A.
  15 to 18 weeks
  B.
  17 to 20 weeks
  C.
  18 to 21 weeks
  D.
  20 to 24 weeks

[lcapri7]

Answer to Question 1

ANS: A
The period of organogenesis lasts from approximately the second until the eighth week of gestation, during which time the embryo undergoes rapid growth and differentiation. During organogenesis, the embryo is extremely vulnerable to teratogens, such as medications, alcohol, tobacco, caffeine, illegal drugs, radiation, heavy metals, and maternal (TORCH) infections. Structural fetal defects are most likely to occur during this period because exposure to teratogens, either before or during a critical period of development of an organ, can cause a malformation.

Answer to Question 2

ANS: B
In gestational weeks 17 to 20, fetal growth continues, and maternal awareness of fetal movements (termed quickening) is often first noted.