Nursing Elites

1. The nurse is teaching a group of students about myelination in a child. Which statement by the students indicates that the teaching was successful?

• A. Myelination continues into adolescence and beyond.
• B. The process occurs in a cephalocaudal (head-to-toe) pattern.
• C. Myelination decreases the speed of nerve impulses.
• D. Myelination decreases the specificity of nerve impulses.

Correct answer: B

Rationale: The correct answer is B. Myelination occurs in a cephalocaudal (head-to-toe) pattern, improving nerve function progressively. Choice A is incorrect as myelination continues into adolescence and beyond, not just during childhood. Choice C is incorrect because myelination actually increases the speed of nerve impulses rather than decreasing it. Choice D is incorrect as myelination enhances the specificity of nerve impulses, making them more efficient and precise rather than less specific.

2. 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.

3. .A nurse is performing a physical examination on an infant with Down syndrome. For what anomaly should the nurse assess the child?

• A. Bulging fontanels
• B. Stiff lower extremities
• C. Abnormal heart sounds
• D. Unusual pupillary reactions

Correct answer: C

Rationale: Abnormal heart sounds could indicate a congenital heart defect, which is common in infants with Down syndrome.

4. 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.

5. A child with a diagnosis of diabetes insipidus is admitted to the hospital. What is the priority nursing intervention?

• A. Administering insulin
• B. Monitoring fluid balance
• C. Administering diuretics
• D. Monitoring vital signs

Correct answer: B

Rationale: The correct answer is monitoring fluid balance. In a child with diabetes insipidus, the primary concern is excessive urination and fluid loss, which can lead to dehydration. Monitoring fluid balance is crucial to prevent dehydration and maintain electrolyte balance. Administering insulin (Choice A) is not indicated in diabetes insipidus, as this condition is not related to insulin deficiency. Administering diuretics (Choice C) should be avoided as it can exacerbate fluid loss in a child already at risk for dehydration. While monitoring vital signs (Choice D) is important, the priority intervention in this situation is monitoring fluid balance to prevent complications associated with dehydration.

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