A woman is seeking genetic counseling during her pregnancy. She has a strong family history of diabetes mellitus. She wishes to have an amniocentesis to determine whether she is carrying a baby who will 'develop diabetes.' Which of the following replies would be most appropriate for the nurse to make?
- A. Doctors don't do amniocenteses to detect diabetes.
- B. Diabetes cannot be diagnosed by looking at the genes.
- C. Although diabetes does have a genetic component
- D. diet and exercise also determine whether or not someone is diabetic.
Correct Answer: C
Rationale: Diabetes involves genetic and environmental factors.
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A patient asks about the purpose of progesterone injections after embryo transfer. What should the nurse explain?
- A. They increase the number of eggs released in future cycles.
- B. They support the uterine lining for implantation and pregnancy maintenance.
- C. They prevent ovarian cyst formation during fertility treatment.
- D. They reduce pregnancy symptoms such as nausea.
Correct Answer: B
Rationale: The correct answer is B: Progesterone injections support the uterine lining for implantation and pregnancy maintenance. Progesterone is essential for preparing the uterus for implantation and maintaining a pregnancy. After embryo transfer, progesterone helps thicken the uterine lining, making it more receptive to the embryo for successful implantation. Other choices are incorrect: A is incorrect because progesterone does not affect the number of eggs released in future cycles; C is incorrect because progesterone does not prevent ovarian cyst formation; D is incorrect because while progesterone can help alleviate some pregnancy symptoms, its primary role is in supporting the uterine lining for pregnancy.
The parents have just received news that their infant has sickle cell disease. They ask the nurse if this could happen to future children. Because this is an example of an autosomal-recessive inheritance, what should the nurse tell Tim and Katie?
- A. Because this child has sickle cell, there is a decreased chance none of your other children will have sickle cell disease.
- B. Each time you get pregnant, there will be a 50/50 chance that your child will have sickle cell disease.
- C. Each time you get pregnant, there will be a 25% chance that your child will inherit the gene from each parent and will have sickle cell disease.
- D. Your next child will have a 50% chance of being a carrier for sickle cell disease.
Correct Answer: C
Rationale: The correct answer is C: Each time you get pregnant, there will be a 25% chance that your child will inherit the gene from each parent and will have sickle cell disease. This is because sickle cell disease follows an autosomal-recessive inheritance pattern, meaning both parents must pass on the sickle cell gene for a child to have the disease. With each pregnancy, there is a 25% chance that the child will inherit one sickle cell gene from each parent, resulting in the disease. Choices A and D are incorrect because they do not accurately reflect the inheritance pattern of sickle cell disease. Choice B is incorrect because it suggests a 50/50 chance, which is not the case with autosomal-recessive inheritance.
A patient asks about the effects of smoking on male fertility. What should the nurse include in the response?
- A. Smoking increases testosterone levels, improving fertility.
- B. Smoking affects sperm count, motility, and morphology.
- C. Smoking has no significant impact on male reproductive health.
- D. Smoking only affects fertility when combined with alcohol use.
Correct Answer: B
Rationale: The correct answer is B because smoking has been proven to negatively impact male fertility by reducing sperm count, motility, and morphology. Nicotine and other harmful chemicals in cigarettes can damage sperm DNA and affect reproductive health. Choice A is incorrect as smoking actually decreases testosterone levels. Choice C is incorrect as smoking does have a significant impact on male reproductive health. Choice D is incorrect because smoking alone can still affect male fertility without the need for alcohol use.
An infertility specialist is evaluating whether a woman's cervical mucus contains enough estrogen to support sperm motility. Which of the following tests is the physician conducting?
- A. Ferning capacity.
- B. Basal body temperature.
- C. Culposcopy.
- D. Hysterotomy.
Correct Answer: A
Rationale: Ferning capacity evaluates the presence of fern-like patterns in cervical mucus, indicating sufficient estrogen.
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.