Nursing Elites

1. When teaching a class about trisomy 21, the instructor would identify the cause of this disorder as:

• A. nondisjunction.
• B. X-linked recessive inheritance.
• C. genomic imprinting.
• D. autosomal dominant inheritance.

Correct answer: A

Rationale: The correct answer is A: nondisjunction. Trisomy 21, also known as Down syndrome, is caused by nondisjunction, which is an error in cell division leading to an extra copy of chromosome 21. This additional genetic material alters the course of development and causes the characteristics associated with Down syndrome. Choices B, C, and D are incorrect. X-linked recessive inheritance refers to genetic disorders carried on the X chromosome, genomic imprinting involves gene expression based on parental origin, and autosomal dominant inheritance relates to disorders caused by a dominant gene on one of the non-sex chromosomes. In the case of trisomy 21, the cause is specifically related to the error in chromosome division, making nondisjunction the most appropriate answer.

2. A young child has coarctation of the aorta. What does the nurse expect to identify when taking the child’s vital signs?

• A. A weak radial pulse
• B. An irregular heartbeat
• C. A bounding femoral pulse
• D. An elevated radial blood pressure

Correct answer: A

Rationale: In coarctation of the aorta, there is narrowing of the aorta leading to decreased blood flow distal to the constriction. This results in a weak or delayed femoral pulse and a relatively weaker radial pulse compared to the femoral pulse. An irregular heartbeat (choice B) is not a typical finding in coarctation of the aorta. A bounding femoral pulse (choice C) would not be expected due to the decreased blood flow beyond the constriction. An elevated radial blood pressure (choice D) is not a common characteristic of coarctation of the aorta; instead, blood pressure may be higher in the upper extremities compared to the lower extremities due to the constriction.

3. When caring for a child diagnosed with sickle cell anemia, what is the priority nursing intervention?

• A. Administering pain medication
• B. Ensuring adequate hydration
• C. Providing nutritional support
• D. Monitoring vital signs

Correct answer: A

Rationale: The priority nursing intervention when caring for a child with sickle cell anemia is administering pain medication. Pain management is crucial in sickle cell anemia due to vaso-occlusive crises that can cause severe pain. While ensuring adequate hydration, providing nutritional support, and monitoring vital signs are important aspects of care for a child with sickle cell anemia, addressing the pain with appropriate medication takes precedence to alleviate the child's suffering and improve their quality of life.

4. A nurse is planning an initial home care visit to a mother who gave birth to a high-risk infant. For what time of day should the nurse schedule the visit for it to be most productive?

• A. When the husband is out of the home.
• B. At a time when the mother is feeding the infant.
• C. At a time that is convenient for the family.
• D. When the nurse can spend time with the family.

Correct answer: C

Rationale: Scheduling the visit at a time that is convenient for the family is the most appropriate choice. This ensures that the family is receptive and available, making the visit more productive. Choice A is incorrect because the presence of the husband may be important for support and decision-making. Choice B focuses solely on the mother and the infant's feeding time, which may not align with the family's overall availability. Choice D is incorrect as it emphasizes the nurse's convenience rather than the family's, which may not lead to an effective visit.

5. A nurse is caring for an infant born with exstrophy of the bladder. What does the nurse determine is the greatest risk for this infant?

• A. Infection
• B. Dehydration
• C. Urinary retention
• D. Intestinal obstruction

Correct answer: A

Rationale: Infection is the greatest risk for an infant with exstrophy of the bladder due to the exposure of the bladder and surrounding tissues. The exposed bladder increases the risk of infection as it lacks the protective covering of the skin. Dehydration (Choice B) may occur but is not the greatest risk compared to infection. Urinary retention (Choice C) is less likely due to the nature of the condition. Intestinal obstruction (Choice D) is not directly associated with exstrophy of the bladder.

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