Nokea
A 10-week gravid states that her sister's son has been diagnosed with an X-linked recessive disease, Duchenne muscular dystrophy. She questions the nurse about the disease. Which of the following responses is appropriate for the nurse to make?
- A. Because Duchenne muscular dystrophy is inherited through the woman
- B. it is advisable for you to see a genetic counselor.
- C. Duchenne muscular dystrophy usually occurs as a spontaneous mutation. It is very unlikely that your fetus is affected.
- D. Your child could acquire Duchenne muscular dystrophy only if both you and your husband carried the gene. You need to check your husband's family history.
Correct Answer: A
Rationale: Duchenne muscular dystrophy is X-linked recessive, meaning the mother must be a carrier for the child to be affected.
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What is the significance of timing in intrauterine insemination (IUI)?
- A. IUI is effective regardless of ovulation timing.
- B. IUI must be timed closely with ovulation for optimal success.
- C. IUI should only be done after the implantation window opens.
- D. Timing is irrelevant as long as sperm quality is high.
Correct Answer: B
Rationale: The correct answer is B because timing is crucial in IUI to increase the chance of fertilization. Intrauterine insemination must be done close to ovulation to ensure that the sperm meets the egg for successful conception. Timing is essential to maximize the chances of successful fertilization.
Choice A is incorrect because timing is indeed important for the success of IUI. Choice C is incorrect because the implantation window is not related to the timing of IUI. Choice D is incorrect because high sperm quality alone is not sufficient for successful IUI; timing is a critical factor in achieving pregnancy through IUI.
A nurse is explaining the importance of lifestyle changes for women trying to conceive. What should the nurse emphasize?
- A. Focus solely on diet; exercise is not relevant to fertility.
- B. Both a balanced diet and regular moderate exercise support reproductive health.
- C. Weight gain is beneficial regardless of current BMI.
- D. Avoid stress management as it has no effect on fertility.
Correct Answer: B
Rationale: The correct answer is B because both a balanced diet and regular moderate exercise support reproductive health. A balanced diet provides essential nutrients for fertility, while exercise helps regulate hormones and improve overall health, increasing chances of conception. Choice A is incorrect because exercise plays a crucial role in fertility. Choice C is incorrect as weight gain should be based on individual needs, not a general recommendation. Choice D is incorrect as stress management is important for fertility as stress can impact hormone levels and ovulation.
A couple who has sought fertility counseling has been told that the man's sperm count is very low. The nurse advises the couple that spermatogenesis is impaired when which of the following occurs?
- A. The testes are overheated.
- B. The vas deferens is ligated.
- C. The prostate gland is enlarged.
- D. The flagella are segmented.
Correct Answer: A
Rationale: Overheating of the testes impairs spermatogenesis, as sperm production requires a cooler environment.
Lisa, a 35-year-old practicing attorney and marathon runner, presents to the clinic with a complaint of irregular menses. She tells the nurse, 'My husband and I want to start a family but it hasn't happened yet. We stopped using birth control 6 months ago. Should we be concerned?' What is the nurse's best response?
- A. Relax and it will happen.
- B. No, infertility is the failure to conceive after 1 year of unprotected intercourse.
- C. Aging and extreme exercise regimens may impact fertility. You should address your concerns with your provider during today's visit.
- D. Decreasing your exercise frequency and intensity will increase your chances of conceiving.
Correct Answer: C
Rationale: The correct answer is C because it acknowledges the potential impact of aging and extreme exercise on fertility, prompting further evaluation by the healthcare provider. Lisa's age and intense exercise regimen are important factors to consider since they can affect her ability to conceive. By addressing her concerns during the visit, the nurse can gather more information, assess potential fertility issues, and provide appropriate guidance or referrals.
Choice A is incorrect because it dismisses Lisa's concerns without addressing potential underlying issues. Choice B is incorrect as it sets a timeline for infertility diagnosis that is generally accepted after 1 year of unprotected intercourse for women under 35 years old, but Lisa's age and lifestyle may warrant earlier evaluation. Choice D is incorrect as it oversimplifies the issue by suggesting only a change in exercise routine as a solution without considering other potential factors impacting fertility.
The nurse is analyzing the pedigree shown below. How should the nurse interpret the genotype of the individuals in locations IV-9 and IV-10?
- A. Fraternal twins.
- B. Unaffected couple.
- C. Proband and sister.
- D. Known heterozygotes.
Correct Answer: D
Rationale: The symbols indicate known heterozygotes.