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 two-year-old has been in the hospital for 3 weeks and has seldom seen family members due to isolation precautions. Which of the following hospitalization changes is most likely to be occurring?

Correct answer: C

Rationale: The correct answer is 'Separation anxiety.' Separation anxiety is a common response in young children when they are separated from their primary caregivers for extended periods. In this case, the two-year-old being in the hospital for three weeks and not being able to see family members due to isolation precautions can trigger separation anxiety. 'Guilt' is a feeling of responsibility for wrongdoing, which is not the most likely change occurring in this scenario. 'Trust' involves reliance and confidence in others, not typically associated with prolonged separation from family. 'Shame' is a negative emotion related to feeling disgrace, which is not the most appropriate response in this hospitalization situation.

3. When the nurse who was not promoted first read the memo and learned that the other nurse had received the promotion, she left the room in tears. This behavior is an example of:

Correct answer: B

Rationale: Crying is a regressive behavior. The ego returned to an earlier, comforting, and less-mature way of behaving in the face of disappointment. Regression involves reverting to an earlier stage of development to cope with stress or conflict. In this scenario, the nurse regressed to a childlike state by crying when faced with the disappointment of not getting the promotion, demonstrating regression as a defense mechanism. Conversion involves transforming anxiety into a physical symptom. Introjection involves unconsciously identifying intensely with another person. Rationalization involves unconsciously creating acceptable explanations to justify unacceptable ideas, actions, or feelings. Therefore, the correct answer is regression as it aligns with the nurse's behavior of regressing to a childlike state by crying due to the disappointment of not receiving the promotion.

4. A home health nurse is planning for her daily visits. Which client should the home health nurse visit first?

Correct answer: C

Rationale: The correct answer is the client with laryngeal cancer who had a laryngectomy. This client is at risk for airway obstruction due to the surgical procedure, making it a priority visit. Clients with AIDS (choice A), a fractured femur (choice B), and diabetic ulcers (choice D) do not have immediate life-threatening conditions that require urgent attention compared to a client with a recent laryngectomy.

5. When a woman is having her first child, she is experiencing which type of crisis event?

Correct answer: B

Rationale: A maturational crisis occurs when an individual reaches a new stage of development, such as becoming a parent for the first time, and needs to develop new coping strategies to adapt to this change. Situational crises (Choice A) arise from external sources, not developmental milestones. Adventitious crises (Choice C) are caused by external events like natural disasters and are not related to personal development stages. Reactive crises (Choice D) are responses to specific stressors and are not associated with developmental milestones like becoming a parent for the first time.

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