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 mother of a 5-year-old child with eczema is getting a check-up for her child before school starts. What will the nurse do during the visit?

• A. Change the bandage on a cut on the child’s hand.
• B. Assess the compliance with treatment regimens.
• C. Discuss systemic corticosteroid therapy.
• D. Assess the child’s fluid volume.

Correct answer: B

Rationale: During a check-up for a child with eczema, assessing compliance with treatment regimens is a key nursing intervention. This helps ensure that the child is following the prescribed treatment plan effectively, which is crucial in managing eczema and preventing flare-ups. Changing a bandage on a cut is not directly related to managing eczema. Discussing systemic corticosteroid therapy may be part of the visit, but assessing compliance is more immediate and essential. Assessing the child’s fluid volume is important for overall health assessment but not specifically related to managing eczema.

3. What intervention best meets a major developmental need of a newborn in the immediate postoperative period?

• A. Giving a pacifier to the newborn
• B. Placing a mobile over the newborn's crib
• C. Providing the newborn with a soft, cuddly toy
• D. Warming the newborn's formula before feeding

Correct answer: A

Rationale: The correct answer is giving a pacifier to the newborn. Sucking is a natural reflex and a source of comfort for newborns, especially postoperatively. Offering a pacifier can help meet their developmental needs by providing comfort and a soothing mechanism. Placing a mobile over the crib (choice B) may provide visual stimulation but does not directly address the newborn's developmental needs for comfort and self-soothing. Providing a soft, cuddly toy (choice C) may offer some comfort but may not be as effective in meeting the specific developmental need for sucking postoperatively. Warming the newborn's formula before feeding (choice D) relates more to feeding practices than directly addressing a major developmental need in the postoperative period.

4. The mother of a 5-year-old boy with a myelomeningocele, who has developed a sensitivity to latex, is being taught by the nurse. Which response from his mother indicates a need for further teaching?

• A. He needs to wear a medical alert identification.
• B. I will need to inform his caregivers about his latex sensitivity.
• C. A product's label always indicates whether it is latex-free.
• D. He must avoid any contact with latex.

Correct answer: C

Rationale: Choice C, 'A product's label always indicates whether it is latex-free,' indicates a need for further teaching. Not all products are clearly labeled as latex-free; therefore, it is essential to verify with manufacturers and healthcare providers. Choices A, B, and D demonstrate appropriate understanding of managing latex sensitivity in the child. Wearing a medical alert identification (Choice A), informing caregivers (Choice B), and avoiding all contact with latex (Choice D) are all important aspects of managing a child's latex sensitivity.

5. A nurse is reviewing the laboratory report of a child with tetralogy of Fallot that indicates an elevated RBC count. What does the nurse identify as the cause of the polycythemia?

• A. Low tissue oxygen needs
• B. Tissue oxygen needs
• C. Diminished iron levels
• D. Hypertrophic cardiac muscle

Correct answer: B

Rationale: The correct answer is B: Tissue oxygen needs. Polycythemia occurs in response to chronic hypoxia, leading the body to increase red blood cell production to enhance oxygen delivery. In tetralogy of Fallot, a congenital heart defect that results in reduced oxygen levels in the blood, the body compensates by producing more red blood cells. Choice A is incorrect as low tissue oxygen needs would not trigger polycythemia. Choice C, diminished iron levels, is not the cause of polycythemia in this case. Choice D, hypertrophic cardiac muscle, is unrelated to the pathophysiology of polycythemia in tetralogy of Fallot.

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