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 is admitting a newborn with hypospadias to the nursery. The nurse expects which finding in this newborn?

• A. absence of a urethral opening
• B. penis appears shorter than usual for age
• C. the urethral opening is along the dorsal surface of the penis
• D. the urethral opening is along the ventral surface of the penis

Correct answer: D

Rationale: Hypospadias is a congenital condition where the urethral opening is located along the ventral surface of the penis, not the dorsal surface (Choice C) or absent (Choice A). This leads to the characteristic appearance of a ventrally displaced urethral meatus. The penis may appear normal in size but with the urethral opening positioned abnormally (Choice D), rather than being shorter than usual (Choice B). Therefore, the correct expectation for a newborn with hypospadias is that the urethral opening is along the ventral surface of the penis, making Choice D the correct answer.

3. A child with a diagnosis of asthma is being evaluated for medication management. What is an important assessment for the nurse to perform?

• A. Assess the child's sleep patterns
• B. Assess the child's dietary intake
• C. Assess the child's academic performance
• D. Assess the child's behavior at home

Correct answer: B

Rationale: Assessing the child's dietary intake is crucial in managing asthma as certain foods can trigger or worsen symptoms. Monitoring dietary habits helps identify any potential triggers and ensures proper nutrition, which can impact asthma control. Assessing sleep patterns, academic performance, or behavior at home may provide valuable information in a general health assessment, but when specifically managing asthma, dietary intake assessment is the most relevant.

4. A parent tells the nurse, “My 9-month-old baby no longer has the same strong grasp that was present at birth and no longer acts startled by loud noises.” How should the nurse explain these changes in behavior?

• A. “I will check these responses before deciding how to proceed.”
• B. “Failure of these responses may be related to a developmental delay.”
• C. “Additional sensory stimulation is needed to aid in the return of these responses.”
• D. “These responses are replaced by voluntary activity at about five months of age.”

Correct answer: D

Rationale: The correct answer is D: “These responses are replaced by voluntary activity at about five months of age.” The grasp reflex and startle reflex (Moro reflex) are normal in newborns but typically disappear as the infant's nervous system matures and voluntary control develops. Choice A is incorrect because checking the responses before deciding a course of action does not address the developmental milestone related to the reflexes. Choice B is incorrect as it jumps to a conclusion of developmental delay without considering the normal developmental process. Choice C is incorrect as additional sensory stimulation is not necessary for the return of these reflexes, as they are expected to naturally diminish as part of normal development.

5. What should the nurse advise the parents of a child with asthma on preventing asthma attacks?

• A. Avoid exposure to allergens
• B. Encourage regular exercise
• C. Provide a high-protein diet
• D. Increase fluid intake

Correct answer: A

Rationale: The correct answer is to advise the parents to avoid exposure to allergens. Asthma attacks are commonly triggered by allergens such as pollen, dust mites, pet dander, and mold. By minimizing the child's contact with these triggers, the likelihood of asthma attacks can be reduced. Encouraging regular exercise can be beneficial for overall health but may not directly prevent asthma attacks. Providing a high-protein diet and increasing fluid intake are important for general health but are not specific preventive measures for asthma attacks.

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