Nursing Elites

1. What is a causative factor of Hirschsprung disease?

• A. Frequent evacuation of solids, liquid, and gases
• B. Excessive peristaltic movement
• C. The absence of parasympathetic ganglion cells in a portion of the colon
• D. One portion of the bowel telescoping into another

Correct answer: C

Rationale: The correct answer is C: The absence of parasympathetic ganglion cells in a portion of the colon is a causative factor of Hirschsprung disease. This absence leads to the inability of the affected segment of the colon to relax, causing a functional obstruction. Choices A, B, and D are incorrect. Frequent evacuation of solids, liquid, and gases, excessive peristaltic movement, and one portion of the bowel telescoping into another are not causative factors of Hirschsprung disease.

2. The mother of a child with acute laryngotracheobronchitis (LTB) asks why her child must be kept NPO. Which response would be the most correct?

• A. The epinephrine given causes nausea and vomiting.
• B. The child is being hydrated with IV fluids.
• C. The child is not hungry.
• D. The child's rapid respirations pose a risk for aspiration.

Correct answer: D

Rationale: The correct answer is D because rapid respirations predispose to aspiration in a child with acute laryngotracheobronchitis. Choice A is incorrect because epinephrine does not directly relate to the need for NPO status. Choice B is incorrect as hydration with IV fluids is not the primary reason for keeping the child NPO. Choice C is incorrect as the child being hungry is not the main concern when keeping a child NPO in this situation.

3. What should the nurse assess in an infant who has been diagnosed with hypertrophic pyloric stenosis?

• A. A history of diarrhea following each feeding
• B. Gastric pain evidenced by vigorous crying
• C. Poor appetite due to a poor sucking reflex
• D. An olive-shaped mass right of the midline

Correct answer: D

Rationale: The correct answer is D. In hypertrophic pyloric stenosis, a key assessment finding is an olive-shaped mass in the right upper quadrant of the abdomen, to the right of the midline. This mass is palpable and represents the hypertrophied pyloric muscle. Choices A, B, and C are incorrect because although they may be present in infants with feeding problems, the definitive assessment for hypertrophic pyloric stenosis is the presence of an olive-shaped mass on the right side of the abdomen, not a history of diarrhea, gastric pain, or poor appetite.

4. How are type IV hypersensitivity reactions different from all other types (I, II, or III) of hypersensitivity reactions?

• A. They involve antigen-antibody complexes.
• B. They are mediated by T cells and do not involve antibodies.
• C. They result in immediate allergic reactions.
• D. They are the least severe form of hypersensitivity.

Correct answer: B

Rationale: Type IV hypersensitivity reactions are mediated by T cells and cytokine release, leading to delayed reactions, unlike types I, II, and III, which involve antibodies. Choice A is incorrect because type IV reactions do not involve antigen-antibody complexes. Choice C is incorrect as type IV reactions do not result in immediate allergic reactions. Choice D is incorrect as type IV reactions are not the least severe form of hypersensitivity; in fact, they are known to cause significant tissue damage and inflammation.

5. A client with hypertension is prescribed a low-sodium diet. Which food should the client avoid?

• A. Fresh fruits
• B. Processed cheese
• C. Whole grain bread
• D. Fresh vegetables

Correct answer: B

Rationale: The correct answer is B: Processed cheese. Processed cheese is high in sodium and should be avoided in a low-sodium diet for clients with hypertension. Fresh fruits, whole grain bread, and fresh vegetables are generally low in sodium and can be part of a healthy diet for clients with hypertension.

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