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. Which information obtained from the mother of a child with cerebral palsy most likely correlates to the diagnosis?

Correct answer: B

Rationale: The diagnosis of meningitis at age 6 months correlates to a diagnosis of cerebral palsy. Cerebral palsy, a neurological disorder, is often associated with birth trauma or infections of the brain or spinal column. Answers A, C, and D are not related to the question. Gestational length (choice A) is not a direct risk factor for cerebral palsy. Physiologic jaundice (choice C) and frequent sore throats (choice D) are not typically associated with cerebral palsy.

3. Why might the physician order antibiotics to be given through the central venous access device (CVAD) rather than through a peripheral IV line if the CVAD becomes infected?

Correct answer: D

Rationale: When a patient's central venous access device (CVAD) becomes infected, administering antibiotics through the line is essential to attempt to eliminate microorganisms within the catheter. The goal is to prevent the necessity of removing the catheter, which might be required if the infection persists. Choice A, 'To prevent infiltration of the peripheral line,' is incorrect as the priority is addressing the catheter infection, not preventing issues with a peripheral line. Choice B, 'To reduce the pain and discomfort associated with antibiotic administration in a small vein,' is not relevant to the rationale for choosing the CVAD for antibiotic administration. Choice C, 'To lessen the chance of an allergic reaction to the antibiotic,' is also incorrect as the main focus is managing the catheter-associated infection rather than allergy prevention.

4. The nurse who was not promoted then went to the utility room and slammed several cupboard doors while looking for Kleenex. This behavior exemplifies:

Correct answer: A.

Rationale: Displacement unconsciously transfers emotions associated with a person, object, or situation to another less threatening person, object, or situation. In this scenario, the nurse slammed doors instead of expressing anger towards the promoted nurse or the administrator who made the promotion decision. Sublimation is the unconscious process of substituting constructive activity for unacceptable impulses. Since slamming cupboard doors is not a constructive activity, this choice is incorrect. Conversion involves transforming anxiety into physical symptoms, which is not demonstrated in the given behavior. Reaction formation keeps unacceptable feelings or behaviors out of awareness by displaying the opposite feeling or behavior, which is not the case here.

5. Which client can best be assigned to the newly licensed practical nurse?

Correct answer: D

Rationale: The best client to assign to the newly licensed nurse is the most stable client. In this case, the client with diverticulitis is the most stable among the options provided. Clients receiving chemotherapy and those post-coronary bypass require specialized care and attention, making them unsuitable for a newly licensed nurse. The client with a TURP may be at risk of bleeding, needing a nurse experienced in managing such complications. Therefore, the client with diverticulitis is the most appropriate choice for the newly licensed practical nurse.

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