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. A client is 2 days post-operative colon resection. After a coughing episode, the client's wound eviscerates. Which nursing action is most appropriate?

Correct answer: B

Rationale: In the scenario where a client's wound eviscerates, the most appropriate nursing action is to cover the wound with a sterile saline-soaked dressing. Reinserting the protruding organ, as mentioned in choice A, is incorrect because it can lead to further complications requiring the client to return to surgery. Choice B, covering the wound with a sterile 4x4 and ABD dressing, is not ideal as it may not provide adequate protection and moisture for the exposed tissue. Choice D, applying an abdominal binder and manual pressure to the wound, is inappropriate as it does not address the specific needs of wound evisceration. Covering the wound with a sterile saline-soaked dressing helps maintain a moist environment, protects the exposed tissue, and prevents infection, promoting optimal wound healing and reducing the risk of complications.

3. Social support systems include all of the following except:

Correct answer: D

Rationale: The correct answer is the use of coping skills and verbalization for anger management. Social support systems involve external sources of support from others or the community. Call-in help lines, emotional assistance provided by others, and community support groups all represent social support systems where individuals can seek help and assistance from outside sources. On the other hand, the use of coping skills and verbalization for anger management refers to individual strategies rather than external social support.

4. Which of the following roommates would be most suitable for the client with myasthenia gravis?

Correct answer: A

Rationale: The most suitable roommate for the client with myasthenia gravis is the client with hypothyroidism because they are quiet. A client with Crohn's disease (choice B) would be up to the bathroom frequently due to gastrointestinal issues, which could disturb the roommate with myasthenia gravis. A client with pyelonephritis (choice C) suffering from a kidney infection will need to urinate frequently, causing disturbances. A client with bronchitis (choice D) will be coughing, potentially disrupting the rest and quiet environment needed by a roommate with myasthenia gravis to manage their symptoms effectively.

5. Which action by the novice nurse indicates a need for further teaching?

Correct answer: A

Rationale: The correct answer is A. The novice nurse failing to wear gloves when removing a dressing indicates a need for further teaching to emphasize infection control practices. This action can lead to the spread of infections. Choices B, C, and D are incorrect because they demonstrate proper nursing skills and techniques. Applying an oxygen saturation monitor to the earlobe, elevating the head of the bed to check blood pressure, and placing the extremity in a dependent position to acquire a peripheral blood sample all reflect understanding of correct procedures in patient care.

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