Nursing Elites

1. After a discussion with the health care provider, the parents of an infant with patent ductus arteriosus (PDA) ask the nurse to explain once again what PDA is. How should the nurse respond?

• A. The diameter of the aorta is enlarged.
• B. The wall between the right and left ventricles is open.
• C. It is a narrowing of the entrance to the pulmonary artery.
• D. It is a connection between the pulmonary artery and the aorta.

Correct answer: D

Rationale: The correct answer is D: 'It is a connection between the pulmonary artery and the aorta.' Patent ductus arteriosus (PDA) is an abnormal connection between the pulmonary artery and the aorta, which normally closes after birth. Choices A, B, and C describe different cardiac conditions and do not accurately define PDA. Choice A is incorrect because PDA does not involve the diameter of the aorta being enlarged. Choice B is incorrect because PDA does not involve the wall between the right and left ventricles being open. Choice C is incorrect because PDA is not a narrowing of the entrance to the pulmonary artery.

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: Trisomy 21, also known as Down syndrome, is caused by nondisjunction, which is an error in cell division that leads to the presence of an extra chromosome 21. This additional chromosome alters the normal genetic makeup, resulting in the characteristics associated with Down syndrome. Therefore, the correct answer is nondisjunction (Choice A). Choices B, C, and D are incorrect because Trisomy 21 is not caused by X-linked recessive inheritance, genomic imprinting, or autosomal dominant inheritance. Understanding the specific genetic mechanism involved in Trisomy 21 is crucial for grasping the basis of this chromosomal disorder.

3. The nurse is caring for a boy with probable intussusception. He had diarrhea before admission, but while waiting for the administration of air pressure to reduce the intussusception, he passes a normal brown stool. Which nursing action is the most appropriate?

• A. notify the practitioner
• B. measure abdominal girth
• C. auscultate for bowel sounds
• D. take vital signs, including blood pressure

Correct answer: A

Rationale: The passage of a normal brown stool in a child with intussusception could indicate spontaneous reduction of the intussusception. This change in the patient's condition is significant, requiring prompt notification of the practitioner for further evaluation and management. While measuring abdominal girth (Choice B) is important for assessing abdominal distention, it is not the priority when a potential spontaneous reduction may have occurred. Auscultating for bowel sounds (Choice C) and taking vital signs, including blood pressure (Choice D), are routine nursing assessments but do not address the immediate need to inform the practitioner of a possible change in the patient's condition that necessitates urgent attention.

4. The parents of a child with asthma ask the nurse how they can help their child prevent asthma attacks. What should the nurse advise?

• 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 often triggered by allergens such as dust mites, pollen, pet dander, and mold. By minimizing the child's exposure to these triggers, the likelihood of asthma attacks can be reduced. Encouraging regular exercise is beneficial for overall health but may not directly prevent asthma attacks. Providing a high-protein diet and increasing fluid intake are important for general well-being but do not specifically address asthma prevention.

5. The school nurse is caring for a boy with hemophilia who fell on his arm during recess. What supportive measures should the nurse use until factor replacement therapy can be instituted?

• A. Apply warm, moist compresses
• B. Apply pressure for at least 1 minute
• C. Elevate the area above the level of the heart
• D. Begin passive range-of-motion unless the pain is severe

Correct answer: C

Rationale: Elevating the affected area above the level of the heart is the correct supportive measure for a child with hemophilia who has experienced trauma. This action helps reduce bleeding and swelling by promoting venous return and preventing further pooling of blood in the affected area. Applying warm, moist compresses (Choice A) may not be recommended as it can potentially increase bleeding by dilating blood vessels. Applying pressure for at least 1 minute (Choice B) can be helpful for minor cuts or wounds but may not be as effective in managing bleeding in a child with hemophilia. Beginning passive range-of-motion (Choice D) should be avoided as it can exacerbate bleeding and cause further damage in a child with hemophilia.

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