Nokea
Match each term with its description. Trophoblast
- A. None
- B. None
- C. Fertilized ovum.
- D. None
Correct Answer: C
Rationale: Trophoblast develops into the placenta.
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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 27-year-old patient presents with injuries sustained in a motor vehicle accident. She was wearing her seatbelt and has multiple bruises and scrapes along her abdomen. She complains of pain 3/10 in her abdomen. She is G1P0 and is at 14 weeks’ gestation. A bedside ultrasound scan confirms that the fetus is stable and not in any distress. The patient is Rh negative, and her husband is Rh positive. What do you anticipate being the next step?
- A. Obtain a urinalysis.
- B. Administer Rh(D) immune globulin (RhoGAM).
- C. Confirm with the provider that she can be discharged home.
- D. Schedule a follow-up ultrasound.
Correct Answer: B
Rationale: The correct answer is B: Administer Rh(D) immune globulin (RhoGAM). In this scenario, the patient is Rh negative and her husband is Rh positive, which puts her at risk for Rh isoimmunization. Administration of Rh(D) immune globulin (RhoGAM) helps prevent the mother's immune system from developing antibodies against the Rh-positive fetus's blood, thereby protecting future pregnancies. This intervention is crucial in preventing hemolytic disease of the newborn.
Choice A: Obtaining a urinalysis is not indicated in this case as the patient's main concern is her abdominal pain and pregnancy status, not related to her urinalysis.
Choice C: Discharging the patient without administering Rh(D) immune globulin would be inappropriate as it puts future pregnancies at risk of complications due to Rh incompatibility.
Choice D: Scheduling a follow-up ultrasound is not the immediate next step. Administering Rh(D) immune globulin is the priority to
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.
Conjoined twins are formed at which point of gestation?
- A. Immediately after fertilization
- B. At the time of implantation
- C. At about 13 to 15 days after conception
- D. In the blastocyst stage
Correct Answer: C
Rationale: Conjoined twins are formed at about 13 to 15 days after conception when the embryonic disc undergoes incomplete splitting. At this stage, the cells have already differentiated into different layers, making separation challenging. Immediately after fertilization (choice A) is too early for conjoined twins to form. At the time of implantation (choice B) is when the blastocyst implants into the uterine wall, but conjoined twins are not formed at this point. In the blastocyst stage (choice D), the cells are still in the process of organizing and have not yet differentiated into distinct layers. Therefore, choice C is the correct answer as it aligns with the timing of conjoined twin formation during embryonic development.