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. What is the primary goal of family education?

Correct answer: B

Rationale: The primary goal of family education is to improve the quality of life. Family education aims to enhance the overall well-being and functioning of both the individual with the condition and their family members. While increased knowledge about mental illness may be a beneficial outcome, it is not the primary objective of family education. Symptom reduction is more commonly associated with psychoeducation rather than family education. Improving caregiving skills is a component of family education, but the primary focus is on improving the quality of life for everyone involved in the caregiving process.

3. The licensed practical nurse is observing a graduate nurse as she assesses the central venous pressure. Which observation would indicate that the graduate needs further teaching?

Correct answer: C

Rationale: The correct answer is C because the client should breathe normally during a central venous pressure monitor reading. Placing the client in a supine position (Choice A) is correct if the client can tolerate it. Turning the stop-cock off (Choice B) and noting the level at the top of the meniscus (Choice D) are also correct actions during CVP monitoring. Instructing the client to perform the Valsalva maneuver is incorrect as it can artificially alter the CVP reading, indicating a need for further teaching.

4. A 25-year-old male is brought to the emergency room with a piece of metal in his eye. Which action by the nurse is correct?

Correct answer: C

Rationale: Covering both eyes with paper cups is the correct action as it helps prevent consensual movement of the affected eye. Attempting to remove the object with a magnet might cause trauma, making choice A incorrect. While rinsing the eye with saline may be necessary, it should be ordered by a doctor and is not the initial action for the nurse, making choice B incorrect. Administering eye drops immediately, as in choice D, is not appropriate in this scenario and does not address the primary concern of preventing further damage by limiting eye movement.

5. When assessing a client's self-expectations about weight loss, which question is most appropriate?

Correct answer: D

Rationale: When assessing a client's self-expectations about weight loss, it is crucial to inquire about what the client considers a realistic weekly weight loss goal. This question helps in understanding the client's perception and expectations regarding the weight loss journey, enabling the establishment of achievable goals. Choices A, B, and C do not directly address the aspect of setting realistic goals for weight loss. While questioning about changing eating habits, feelings about losing weight, or the importance of weight loss are relevant, they do not specifically focus on setting achievable goals, which is essential for effective weight management.

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