Nokea
A pregnant adolescent tells the nurse she is taking isotretinoin (Accutane). Which statement is correct?
- A. Isotretinoin is teratogenic and associated with major fetal malformations, so the client should stop the medication immediately.
- B. None
- C. None
- D. None
Correct Answer: A
Rationale: Isotretinoin is known to cause severe fetal abnormalities.
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Along with gas exchange and nutrient transfer, the placenta produces many hormones necessary for normal pregnancy, including which of the following? (Select all that apply.)
- A. Insulin
- B. Estrogen
- C. Progesterone
- D. Testosterone
Correct Answer: B
Rationale: - Estrogen: The placenta secretes estrogen during pregnancy, which plays a crucial role in maintaining the pregnancy and preparing the body for childbirth. Estrogen helps regulate the menstrual cycle, supports fetal development, and stimulates the growth of the uterus and breasts.
What is the portion of the endometrium beneath the blastocyst known as?
- A. Decidua basalis
- B. Chorionic villi
- C. Decidua vera
- D. Decidua capsularis
Correct Answer: A
Rationale: The decidua basalis is the portion of the endometrium beneath the blastocyst.
With regard to the estimation and interpretation of the recurrence of risks for genetic disorders, nurses should be aware that:
- A. With a dominant disorder, the likelihood of the second child also having the condition is 100%.
- B. An autosomal recessive disease carries a one in eight risk of the second child also having the disorder.
- C. Disorders involving maternal ingestion of drugs carry a one in four chance of being repeated in the second child.
- D. The risk factor remains the same no matter how many affected children are already in the family.
Correct Answer: D
Rationale: Each pregnancy is an independent event. The risk factor remains the same for each child.
What are the number and type of chromosomes in a normal mature gamete?
- A. 22 autosomes
- B. 22 autosomes and one sex chromosome
- C. 46 chromosomes
- D. 23 autosomes
Correct Answer: B
Rationale: Gametes have 22 autosomes and one sex chromosome, resulting in 23 chromosomes in total.
A patient who has just received confirmation that she is pregnant is distressed because she has a seizure disorder that she manages with carbamazepine. Which is the nurse’s greatest concern?
- A. The carbamazepine may be discontinued.
- B. The pregnancy is likely to end with fetal demise.
- C. The fetus will experience loss of vision and hearing.
- D. Carbamazepine is teratogenic and causes neural and facial defects.
Correct Answer: D
Rationale: Carbamazepine is a teratogenic drug that poses risks of neural tube defects and craniofacial abnormalities, making this the greatest concern.