which laboratory test would be the least effective in making the diagnosis of a myocardial infarction
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NCLEX-PN

Nclex Practice Questions 2024

1. Which laboratory test would be the least effective in diagnosing a myocardial infarction?

Correct answer: A

Rationale: AST, choice A, would be the least effective in diagnosing a myocardial infarction as it is not specific for this condition. Troponin, CK-MB, and myoglobin (choices B, C, and D) are more specific markers for myocardial infarction. Troponin is considered the gold standard due to its cardiac specificity. CK-MB is also specific to the heart, and its isoenzyme levels elevate post-heart damage. Myoglobin, although elevated in myocardial infarction, is not as specific as troponin and CK-MB and can also increase in conditions like burns and muscle trauma. Therefore, AST is the least effective choice for diagnosing a myocardial infarction.

2. A nurse notes that an elderly client suddenly does not keep appointments and is not wearing appropriate clothing. Which statement by the client raises the suspicion of financial abuse?

Correct answer: B

Rationale: The correct answer is B: "I am a little short on cash since my daughter moved in to help me."? This statement raises suspicion of financial abuse as it suggests a recent change in financial circumstances after the daughter moved in. Financial abuse in elderly clients can be indicated by sudden unexplained financial deficits or changes, such as difficulty paying for necessities despite previously being able to do so. Choices A, C, and D do not directly imply a recent financial change due to external factors, making them less indicative of potential financial abuse. Option B is the most concerning statement that warrants further investigation into possible financial exploitation.

3. Fat emulsions are frequently administered as a part of total parenteral nutrition. Which statement is true regarding fat emulsions?

Correct answer: A

Rationale: The correct statement is that fat emulsions have a high energy-to-fluid-volume ratio. Fat emulsions are formulated in 10%, 20%, and 30% solutions and supply 1.1, 2, and 3 kilocalories, respectively, for each milliliter. In comparison, a milliliter of 5% dextrose only supplies 0.17 kilocalories. Choices B, C, and D are incorrect. Choice B is false because fat emulsions are essentially pH neutral and isotonic, not hypertonic. Choice C is incorrect because fat emulsions are not basic solutions; they are essentially pH neutral. Choice D is incorrect as fat emulsions are not alkaline; they are pH neutral, making them compatible with most medications.

4. In the context of milieu therapy, what is its primary purpose?

Correct answer: D

Rationale: Milieu therapy aims to provide routine daily experiences to clients. By offering a structured and predictable environment, it helps individuals feel safe and secure, reducing disruptive behaviors. Exploring the client's perception of reality (choice A) may be part of therapy but not the primary focus. Enhancing social interaction abilities (choice B) and addressing maladaptive behaviors (choice C) are important aspects of therapy but not the primary purpose of milieu therapy.

5. Which of the following roommates would be best for the client newly admitted with gastric resection?

Correct answer: D

Rationale: The most suitable roommate for the client newly admitted with gastric resection is the client with phlebitis. Phlebitis is an inflammation of the blood vessel and is not infectious, making it a safer option for the surgical client. Crohn's disease clients (choice A) have frequent stools that might spread infections to the surgical client, posing a risk. A client with pneumonia (choice B) is coughing, which can disturb the gastric client's recovery. Additionally, a client with gastritis (choice C) who is vomiting and experiencing diarrhea would also not be an ideal roommate for a client recovering from gastric resection.

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