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. The nurse caring for families in crisis assesses the affective function of an immigrant family consisting of a father, mother, and two school-age children. Based on Friedman's structural functional theory, what defines this family component?

• A. Meeting the love and belonging needs of each member
• B. Teaching children how to function and assume adult roles in society
• C. Ensuring the family has necessary resources with appropriate allocation
• D. Involving the provision of physical care to keep the family healthy

Correct answer: A

Rationale: In Friedman's structural functional theory, the affective function of a family involves meeting the love and belonging needs of each member. This includes emotional support, care, and connections that contribute to the overall well-being of the family unit. Choice B is incorrect as it pertains more to the socialization function of the family, where children learn societal roles. Choice C relates to the economic function of the family, ensuring resources are available and allocated appropriately. Choice D focuses on the instrumental function of the family, which involves meeting the physical needs and health of its members.

3. A child is brought to the clinic after tripping over a rock. The child states, 'I twisted my ankle,' and is given a diagnosis of a sprain. What intervention is most important for the nurse to include in the discharge instructions for this child?

• A. For the first 24 hours, apply ice for 20 minutes and remove for 60 minutes.
• B. Bed rest with the leg elevated for 36 hours.
• C. May take an NSAID for pain as prescribed.
• D. Use a compression dressing for 72 hours.

Correct answer: A

Rationale: The correct answer is A. Applying ice in intervals helps to reduce swelling and pain in the first 24 hours after a sprain. This intervention is crucial in the initial management of a sprain to decrease inflammation and provide pain relief. Bed rest with the leg elevated for 36 hours (Choice B) is not recommended as prolonged immobilization can lead to stiffness and decreased range of motion. Allowing the child to take an NSAID for pain as prescribed (Choice C) is a supportive measure but not as essential as ice application in the acute phase. Using a compression dressing for 72 hours (Choice D) may assist in reducing swelling, but it is not as critical as the immediate application of ice to manage pain and inflammation effectively.

4. An infant with a congenital heart defect is being given gavage feedings. The parents ask the nurse why this is necessary. How should the nurse respond?

• A. It limits the chance of vomiting.
• B. It allows the feeding to be administered rapidly.
• C. The energy that would have been expended on sucking is conserved.
• D. The quantity of nutritional liquid can be regulated better than with a bottle.

Correct answer: C

Rationale: The correct answer is C: 'The energy that would have been expended on sucking is conserved.' Gavage feedings are necessary for infants with congenital heart defects as they help conserve the infant’s energy by eliminating the need for sucking, which can be taxing for infants with cardiac issues. Choice A is incorrect because gavage feedings are not primarily used to limit vomiting. Choice B is incorrect as the speed of administration is not the main reason for gavage feedings in this case. Choice D is incorrect because the regulation of the quantity of nutritional liquid is not the primary rationale for gavage feedings in infants with congenital heart defects.

5. What should be included in the teaching plan for parents of an infant diagnosed with phenylketonuria (PKU)?

• A. Mental retardation occurs if PKU is untreated.
• B. Testing for PKU is done immediately after birth.
• C. Treatment for PKU includes lifelong dietary management.
• D. PKU is transmitted by an autosomal recessive gene.

Correct answer: A

Rationale: The correct answer is A: 'Mental retardation occurs if PKU is untreated.' Phenylketonuria (PKU) is a metabolic disorder that, if left untreated with dietary management, can lead to severe mental retardation due to the accumulation of phenylalanine. It is crucial for parents to understand the potential consequences of untreated PKU to emphasize the importance of early and consistent treatment. Choice B is incorrect because testing for PKU is typically done through newborn screening shortly after birth, not immediately. Choice C is incorrect as treatment for PKU primarily involves strict dietary management that restricts phenylalanine intake, not lifelong medications. Choice D is incorrect as PKU is inherited in an autosomal recessive pattern, meaning that both parents must pass on a mutated gene for the disorder to manifest.

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