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A couple is considering ICSI (Intracytoplasmic Sperm Injection) as part of IVF. What should the nurse explain?
- A. ICSI is only used for couples with unexplained infertility.
- B. ICSI involves injecting a single sperm directly into an egg.
- C. ICSI guarantees fertilization and successful pregnancy.
- D. ICSI eliminates the need for ovarian stimulation.
Correct Answer: B
Rationale: The correct answer is B because ICSI involves injecting a single sperm directly into an egg to facilitate fertilization. This method is used when there are issues with sperm quality or quantity. It is not limited to couples with unexplained infertility (choice A), does not guarantee successful pregnancy (choice C), and does not eliminate the need for ovarian stimulation (choice D). Therefore, choice B is the most accurate explanation of what ICSI entails.
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Once oogenesis is complete, the resultant gamete cell contains how many chromosomes?
- A. 23
- B. 46
- C. 47
- D. 92
Correct Answer: A
Rationale: Oogenesis results in a haploid gamete with 23 chromosomes.
A patient and her husband request to view the results of their infant's karyotype. An aneuploidy was noted. The nurse understands the results to indicate what?
- A. An abnormal number of chromosomes were present on the karyogram.
- B. Translocations were noted on some of the chromosomes.
- C. The infant's chromosomes had broken areas, causing an abnormality in the picture of the chromosomes.
- D. Some of the infant's chromosomes were duplicated to total 46 chromosomes.
Correct Answer: A
Rationale: Correct Answer: A
Rationale: A karyotype is a visual representation of an individual's chromosomes. An aneuploidy indicates an abnormal number of chromosomes, which can result in genetic disorders such as Down syndrome. A karyotype shows the number, size, and shape of chromosomes, so an abnormal number of chromosomes on the karyogram is the correct interpretation.
Summary of Other Choices:
B: Translocations involve the movement of genetic material between chromosomes, not an abnormal number of chromosomes.
C: Chromosomal breaks would not typically result in an aneuploidy but rather structural abnormalities.
D: Duplication of chromosomes to total 46 would not lead to aneuploidy but rather a normal chromosome count.
A nurse is counseling a couple about genetic testing options. What should the nurse include in the discussion?
- A. Genetic testing is only available for known hereditary conditions.
- B. Preimplantation genetic testing is performed after embryo transfer.
- C. Genetic counseling is recommended for couples with a history of genetic disorders.
- D. Genetic testing cannot determine the risk of inherited infertility.
Correct Answer: C
Rationale: The correct answer is C because genetic counseling is crucial for couples with a history of genetic disorders to assess risks and make informed decisions. It helps in understanding inheritance patterns, potential risks to offspring, and available testing options. Choice A is incorrect as genetic testing is not limited to known hereditary conditions. Choice B is incorrect as preimplantation genetic testing is done before embryo transfer. Choice D is incorrect as genetic testing can indeed assess the risk of inherited infertility through various genetic tests.
A patient undergoing fertility treatments asks about the role of luteinizing hormone (LH). What should the nurse explain?
- A. LH stimulates the growth of the uterine lining.
- B. LH triggers ovulation by causing the release of a mature egg from the ovary.
- C. LH suppresses follicle development in the early cycle.
- D. LH is only important during pregnancy.
Correct Answer: B
Rationale: The correct answer is B because LH triggers ovulation by causing the release of a mature egg from the ovary. LH surge occurs around mid-cycle, stimulating the mature follicle to rupture and release the egg. This is crucial for fertility and conception.
A is incorrect because LH does not stimulate the growth of the uterine lining; that is primarily regulated by estrogen and progesterone.
C is incorrect because LH actually promotes follicle development and maturation.
D is incorrect because LH is important for ovulation and not just during pregnancy.
A woman asks the obstetrician's nurse about cord blood banking. Which of the following responses by the nurse would be best?
- A. I think it would be best to ask the doctor to tell you about that.
- B. The cord blood is frozen in case your baby develops a serious illness in the future.
- C. The doctors could transfuse anyone who gets into a bad accident with the blood.
- D. Cord blood banking is very expensive and the blood is rarely ever used.
Correct Answer: B
Rationale: Cord blood banking preserves stem cells for potential future medical use.