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At 16 weeks of gestation a pregnant person states, 'The most dangerous time is the first 3 months, so I shouldn’t have to worry from now on about any dangers to the baby.' What is the nurse's most appropriate response?
- A. There are teratogens with the potential to harm your baby at any time during the pregnancy.
- B. We really won’t be able to say for sure before you have an ultrasound.
- C. You are correct. You are past the critical point.
- D. You don’t seem very concerned about your baby’s welfare.
Correct Answer: A
Rationale: The correct answer is A because teratogens, substances that can harm the developing fetus, can have negative effects on the baby at any point during pregnancy, not just in the first trimester. The nurse's response should educate the pregnant person about the ongoing risks and the importance of avoiding harmful substances throughout pregnancy.
Option B is incorrect because an ultrasound is not used to assess the risk of teratogens. Option C is incorrect as it provides incorrect information that the risk is past, which is not true. Option D is incorrect as it is judgmental and does not address the pregnant person's misconception about the risks throughout pregnancy.
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With regard to chromosome abnormalities, nurses should be aware that:
- A. They occur in approximately 10% of newborns.
- B. Abnormalities of number are the leading cause of pregnancy loss.
- C. Down syndrome is a result of an abnormal chromosome structure.
- D. Unbalanced translocation results in a mild abnormality that the child will outgrow.
Correct Answer: B
Rationale: Aneuploidy is an abnormality of number that also is the leading genetic cause of mental retardation.
A female patient with a history of infertility is scheduled to have a hysterosalpingogram. Which findings can be detected with this procedure? Select all that apply.
- A. Tubal occlusions
- B. Uterine fibroids
- C. Cervical irritation
- D. Bicornate uterus
Correct Answer: A
Rationale: The correct answer is A: Tubal occlusions. Hysterosalpingogram is a diagnostic imaging procedure used to evaluate the uterus and fallopian tubes. It can detect tubal occlusions by visualizing the flow of contrast dye through the fallopian tubes. Choice B, uterine fibroids, is incorrect as hysterosalpingogram does not specifically assess uterine fibroids. Choice C, cervical irritation, is also incorrect as this procedure focuses on the uterus and fallopian tubes, not the cervix. Choice D, bicornuate uterus, is incorrect as hysterosalpingogram primarily evaluates tubal patency and uterine cavity shape, not specific uterine anomalies like a bicornuate uterus.
The nurse is explaining the process of cell division during the preembryonic period to a group of nursing students. Which statement best describes the characteristics of the morula?
- A. Fertilized ovum before mitosis begins
- B. Double layer of cells that becomes the placenta
- C. Flattened, disk-shaped layer of cells within a fluid-filled sphere
- D. Solid ball composed of the first cells formed after fertilization
Correct Answer: D
Rationale: The correct answer is D because a morula is a solid ball composed of the first cells formed after fertilization. During the preembryonic period, the zygote undergoes several rounds of cell division to form a morula, which is a compact cluster of cells. A: is incorrect as a fertilized ovum is a zygote, not a morula. B: is incorrect as the double layer of cells that becomes the placenta is the bilaminar germ disc, not the morula. C: is incorrect as a flattened, disk-shaped layer of cells within a fluid-filled sphere describes the blastocyst, not the morula. Thus, the characteristics of a morula being a solid ball composed of the first cells formed after fertilization make option D the correct choice.
The nurse would anticipate that a patient with elevated levels of which hormone would require radiologic imaging of the brain?
- A. TSH
- B. prolactin
- C. progesterone
- D. FSH
Correct Answer: B
Rationale: The correct answer is B: prolactin. Elevated prolactin levels can indicate a pituitary tumor, which may require brain imaging. TSH, progesterone, and FSH are not typically associated with the need for brain imaging. TSH is related to thyroid function, progesterone to the menstrual cycle, and FSH to reproductive health. Prolactin is the hormone primarily associated with lactation and can be elevated due to various reasons, including pituitary tumors. Therefore, in a patient with elevated prolactin levels, brain imaging is necessary to assess for the presence of a pituitary tumor.
Which statement best describes the changes that occur during the fetal period of development?
- A. Maturation of organ systems
- B. Development of basic organ systems
- C. Resistance of organs to damage from external agents
- D. Development of placental oxygen–carbon dioxide exchange
Correct Answer: A
Rationale: The correct answer is A because during the fetal period, organ systems continue to mature and develop to become fully functional. This includes refining the structures and functions of organs that have already been formed during the embryonic period. Option B is incorrect because basic organ systems are already formed during the embryonic period. Option C is incorrect as organs are still susceptible to damage during the fetal period. Option D is incorrect because the development of placental oxygen–carbon dioxide exchange primarily occurs during the early stages of pregnancy, not specifically during the fetal period.