which laboratory test would be the least effective in making the diagnosis of a myocardial infarction
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Nursing Elites

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. When supporting a family who has just experienced a sudden and unexpected death, the nurse needs to know:

Correct answer: A

Rationale: The correct answer is that survivors have greater emotional turmoil and shock than when death is expected. Sudden death produces more emotional turmoil and shock in survivors compared to gradual, expected death. Survivors of sudden death do not have the opportunity to engage in anticipatory grief. The unexpectedness of sudden death is the most disturbing and unbalancing factor, leading to heightened emotional turmoil and shock. Choice B is incorrect as survivors of sudden death experience more emotional turmoil and shock. Choice C is incorrect because sudden death brings about a different level of emotional turmoil and shock. Choice D is incorrect as survivors of sudden and unexpected death still go through significant emotional distress.

3. When working with a client diagnosed with Borderline Personality Disorder who frequently attempts self-harm, what is the best intervention to facilitate behavior change?

Correct answer: B

Rationale: The most effective intervention when working with clients who have a history of self-harm, like the client diagnosed with Borderline Personality Disorder, is to involve them actively in their treatment. By enlisting the client to define and describe the harmful behaviors, the client becomes an integral part of identifying triggers and understanding the underlying causes of their actions. This approach empowers the client, promotes self-awareness, and fosters a sense of control over their behaviors. Constantly observing the client (Choice A) may lead to a lack of trust and hinder the therapeutic relationship. Checking on the client every 15 minutes (Choice C) may disrupt the client's sense of autonomy and privacy. Removing all items from the environment that could be used for self-harm (Choice D) is a temporary solution and does not address the root causes of the behavior.

4. A client is taking hydrocodone (Vicodin) for chronic back pain. The client has required an increase in the dose and asks whether this means he is addicted to Vicodin. The nurse should base her reply on the knowledge that:

Correct answer: A

Rationale: Drug tolerance is characterized by the ability to ingest a larger dose without adverse effects and decreased sensitivity to the substance. In this scenario, the client needing an increased dose of hydrocodone to achieve the same pain relief indicates tolerance developing, not addiction. Choice B is incorrect as it describes drug dependence, where the individual is preoccupied with the drug and has a loss of control. Choice C is incorrect because addiction involves psychological behaviors related to substance use, not just physical dependence with withdrawal symptoms and tolerance. Choice D is incorrect as it refers to a dual diagnosis, which is the coexistence of substance abuse and psychiatric disorders, not the development of tolerance to a drug.

5. When assessing a client with glaucoma, a nurse expects which of the following findings?

Correct answer: B

Rationale: When assessing a client with glaucoma, a common finding is complaints of halos around lights. Other symptoms of glaucoma include loss of peripheral vision or blind spots, reddened sclera, firm globe, decreased accommodation, and occasional eye pain. Glaucoma may be asymptomatic until permanent damage to the optic nerve and retina occurs. Double vision is not a typical symptom of glaucoma. In terms of intraocular pressure, normal levels range from 10 to 21 mm Hg, making an intraocular pressure of 15 mm Hg within the normal range. A soft globe on palpation is not a typical finding in glaucoma.

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